Happy new Year , Please Sir upload all the basics lecture within 2 months as I trust you so I can request you please upload frequency maintain , I like all your video after watching it completely, also you are helping others to achieve their new year resolution.
I was losing confidence in my DSA skills after being away for so long. This video sharpened my thinking as well as brought back that confidence. Thanks a lot !!
am also solving the 300+ problem but not prety sure to gaining the confidence in problem solving but after watching this video am same as much confidence and understabding the loop and there flow so one doubt is clear if your not able to solve any problem because of the logic building then solve this pattern and back to the problem solving
Thanks for the great content ❤ @tip for the pattern 18 the logic in the video is hardcoded for 'E' letter alone . Kindly utilize the below solution. void alphaTriangle(int n) { for(int i=0;i
Bhaiya learning DSA from your AtoZ sheet . i am in final year I can't thank you enough for bring light in my dark future..when everyone is saying that "tumse an ho payega "I finally decided that "ab mujhse hi ho payega" thank you bhaiya .and please agle 3 month take intermediate level ka DSA sikha do.
you are an inspiration for programming faternity! loved the way you teach. The ease with which you have taught recursion and dp is commendable. i get to learn every day from you. Thank you for being light in lives of programmers.
The better and correct code for pattern no.18 1:01:00 would be : void pattern18(int n){ for(int i = 0 ; i < n ; i++){ for(int j = i ; j >= 0 ; j--) cout
yep! I did same as you, here is my java code if anyone cares public static void pattern18(int n) { for (int i = 0; i < n; i++) { char ch = 'A'; char chs = (char)(ch + (n-i-1)); for(int j=0; j
If You Start From Loop from 0 the formula will be lil bit easier helps more to understand for a beginner 23:18 For Printing ***** **** *** ** * for(int i=0;i
Patter seventeen :@58:53 Solution is very Here is approach first print space then print ascending order charcater till i Then print descending order till i-1 First loop for space: j=1 to j
striver i think you made a little mistake in pattern18 your considering j as E, but the start letter depends on number of rows, therefore the code will work for more test cases void pattern18(int n){ for (int i = 1; i
For pattern number 12 we could also have done the following : int space = 2 * ( n - i )...ofcourse this variable would have to be defined within the scope of the outer loop. Besides, the problem given on the sheet and the problem redirected to by the link are actually slightly different. Here's the code snippet for solving the problem redirected to by the link : void printTriangle(int n) { for(int i = 1; i
Hey Striver, i think for the pattern 18, we should not directly start from 'E', I think according to pattern we should be starting form ('A' + n - i + 1) until ('A' + n), for(int i = 0; i < n; i++) { for(char ch = 'A' + (n - i - 1); ch < 'A' + n; ch++) { cout
Thank you Striver, preciate ya!!. I just completed all the pattern problems. The last one was quite tricky as I did not quickly understand your solution. However, I have provided my solution below for others that might find it helpful and maybe easier to understand. Intuition: Fill the 2D array (named result) with the values (n, n-1, n-2 ...) then just simply print it out (row x column)👍🏾. You can fill the result array like this : 1. Outer loop fills the layer (A layer is a square ring of numbers). 2. Get the number to be filled per layer => int num = n - layer. Hence if n = 3, layer = 0 (first one) -> n , n - 1, n - 2 ... so we print 3, 2, & 1 per square ring. 3. Middle loop iterates over the rows of the current layer. 4. Inner loop iterates over the columns of the current layer. static void pattern22() { int size = 2 * n - 1; int[][] result = new int[size][size]; for (int layer = 0; layer < n; ++layer) { int num = n - layer; for (int i = layer; i < size - layer; ++i) { for (int j = layer; j < size - layer; ++j) { result[i][j] = num; } } } for (int[] row : result) { for (int col : row) { System.out.print(col + " "); } System.out.println(); } }
More than the premium course I have learned a lot. The lecture delivery, explanation, and expression are great, and that makes me concentrate more to watch the video. I have done all the problems on my own using your 4 pattern-solving rules. Hats off sir ❤❤❤❤❤❤❤❤❤❤
39:39 Pattern11 Could be done using different logic. // Outer loop = rows/Lines for (int i = 0; i < n; i++) { // innerloop = Collumns for (int j = 0; j
It doesnot come interviews i agree. But still i would urge all to do this exercise... It will help all Software engineers or aspirants to improve their problem solving skills by seeing patterns
Hmare clg m placement m ye pattern hi puche the bs 3 logo se bne the bs phle ye dekh liya hota to syd mera bhi placement ho jata but ab practice kr rhi hu
tip pattern-11 if flipping gets too annoying you can check the sun of loop variables inner and outer depending on initial condition ie i=1or 0 you can use if else statement to print correct pattern without much thinking for(int i=1; i
18th pattern We should define a const char starting alphabet of each line by taking the char ch='A'+n-i (before starting the outer for loop) void alphaTriangle(int n) { char ch = 'A' + n - 1; for (int i = 0; i < n; i++) { for (char c = ch; c >= ch - i; c--) { cout
@@gunasekarb3100 Idk about that😅, but divided the whole patter into 4 parts & designed the parts & framed them one by one(basically the brute force approach u could say)
For the 11th Pattern, I thought if both column and row are of the same type(i.e. (even, even) and (odd, odd)) the sum of the row will be even, then we have to print 1 and when are different the sum is going to be odd. So, I tried it in a different way. Here's my approach: for(int i=0;i
In Pattern 22, if someone is coding in c language, there is no min() function so it can be written like this by creating a function: #include int minimum(int a,int b, int c, int d); int main() { int num=4; int n=2*num-1; for(int i=0;i
Thank you for this content! This video helped a lot! Kindly correct the code for pattern 18 to adapt to different values of input... void print18(int n){ for(int i=1; i
Edited : Saw you correct it in the next question :-D For pattern 19 , I don't think we should hard code the number of spaces as 8 and then keep on decreasing the number by 2 with each iteration , as it will only work for input n = 5. Rather there should be a general formula : for(int i = n ; i >=1; i--){ for(int j =1; j
i did pattern 19 myself by running 6 for loops and without seeing strivers explanation based on previous patterns knowledge , it took me 2 hrs to first draw it on book and break it into smaller chunks and then write code, row number is the game changer in second half rhombus
For pattern18 if we don't want to hardcode 'E' and use it for other row numbers then we can make small change as char initial = (char) ('A'+ (n-1)); for (int i = 0; i < n; i++) { for (char c = (char) (initial - i); c
pattern 20 is same as pattern 19 but just interchanging the spaces and stars variables. that means no.of stars in pattern 20 will be same as no.of spaces in pattern 19 and vice-versa.
for pattern 7 i have tried with two inputs and using conditional statements it works well with the input of n=5 and m=9 The logic of the code is for (int i = 1; i
What will be the frequency of lectures and will you teach the complete DSA in this course? Also what will be the tentative duration of this course? Great lec btw
last pattern was awesome. I followed another method and figured out some another pattern and symmetricity in it. But your approach was very informative too.
IN problem 7 : No i think no need last space . I mean, space and star print the same thing .. Thank you sir code: #include using namespace std; #define ll long long int main() { int n; cin>>n; for(int i=1;i
Source code ? I have learned Star space star patterns with your trick ❤️🔥. It would be better if you normalize and use loop from 0 or 1 for every problem :) cheers !!!
Better solution for Pattern no.12 (using only 2 for loop) : #include using namespace std; int main() { int n = 9; int start = 1; int end = n*2; int temp; for (int row = 1; row
Thank you for your clear and concise explanation. I used to follow you for so long on LinkedIn, but didn't get a chance to watch your content. Now is the time for me to get prepared for a DSA interview.
Understood. Today is November 18th, 2024, i have started my journey with Strivers SDE sheet, i will come here periodically to update my status and my offers! Wish me luck!
I think we should not hardcode 'E' in pattern 18, better implementation will be, void printPattern(int n) { for (int i = 0; i < n; i++) { //letters char ch = 'A' + n - i - 1; for (int j = 0; j
believe me I watched the petterns videos earlier from another youtubers too but I myself wasn't able to solve a single pattern but this time this person made me do the complex patterns by my self.He is something different .Hatss off to youu bhaiya
problem 22 - For Python: I found below approach most optimised. If u observe (row wise): 1st half and 2nd half is a mirror (ignore middle for a while.) 1st half of a row is a combination of two parts: a - fix part b - decremental part for eg , for n = 6 (considering just 1st half of a row) row1 : 666666 -> all fix , no decremental row2 : 655555 -> 6- decremental , 55555 - fix row3 : 654444 -> 65 - dec , 4444 - fix row4 : 654333 -> 654 - dec , 333 - fix derive the code for dec and fix , then combine the string to generate 1st part of a row , then neglet last character and reverse the result , concatenate both original and reverse to get full row. time difference (n = 500 ) 1. n - min() approach : 256ms 2. above approach : 54 ms
As an alternative solution for pattern #22: every number equals to the distance from center + 1. private static void numberPattern(int n) { for (int i = -n+1; i < n; i++) { for (int j = -n+1; j < n; j++) { System.out.print(1 + Math.max(Math.abs(i), Math.abs(j))); } System.out.print(" "); } }
For pattern 18 this can be tried too. It can print decreasing pattern for any no of alphabets (don't exceed n = 25 in input) void pattern18(int n) { int count = n; for(int i = 0; i
In pattern 19 we can't assign space for the second part of the pattern it should be dynamic, public class Solution { public static void symmetry(int n) { int space = 0; for(int i =0;i
You're answer for question 18 only gets correct answer when n is 5 because you hardcoded E into the for loop. The answer should be: void print18(int n){ for (int i=0;i
39:22 tip for pattern 11: if the sum of every single (row+column) is 'even' then have to print 1 else 0 if((i + j) % 2 === 0) print(1) else print @mehtabmulltani3194
Let's march ahead, and create an unmatchable DSA course! ❤
Do consider to give us a like, and a subscribe, means a world to us..
❤️
competitive programming content plz sir how to reach candidate master i was stucked on specialist
Thank you dada love from Kolkata
STL next?
Happy new Year , Please Sir upload all the basics lecture within 2 months as I trust you so I can request you please upload frequency maintain , I like all your video after watching it completely, also you are helping others to achieve their new year resolution.
Intro: 0:00
BuildUp Logical Thinking w/ patterns: 0:20
Pattern_01: 1:34
4 Rules for solving patterns: 2:24
Pattern_02: 14:17
Pattern_03: 17:33
Pattern_04: 19:53
Pattern_05: 21:00
Pattern_06: 23:39
Pattern_07: 24:33
Pattern_08: 31:10
Pattern_09: 34:16
Pattern_10: 35:12
Pattern_11: 39:22
Pattern_12: 42:15
Pattern_13: 46:52
Pattern_14: 48:42
Pattern_15: 50:57
Pattern_16: 53:03
Pattern_17: 54:42
Pattern_18: 59:45
Pattern_19: 1:01:28
Pattern_20: 1:06:36
Pattern_21: 1:12:29
Pattern_22: 1:15:41
Like!!: 1:21:17
Thankyou 🙏🏻 added
@@takeUforward where r u bro, new lectures 🤔🤔😭😭
Tnx bro
I was losing confidence in my DSA skills after being away for so long. This video sharpened my thinking as well as brought back that confidence. Thanks a lot !!
did you solve them by your own or first watched ,then, practice them ....
@@FRACTALUMAR i first watched whole video once, then i solved most of the problems on my own, if needed i came back to video.
am also solving the 300+ problem but not prety sure to gaining the confidence in problem solving but after watching this video am same as much confidence and understabding the loop and there flow so one doubt is clear if your not able to solve any problem because of the logic building then solve this pattern and back to the problem solving
Tip:
When you're printing spaces in a pattern, replace the space with any other symbol like this "-", it helps in understanding what we are doing.
❤
Thanks a lot it really helped me
nice one thanks for sharing
thanks for sharing that did change my way of thinking somewhat
very good approach
saw a lot of videos before to understand pattern 22. But never got it. The way you solved it!!! What can I say. We owe you big time brother.
In Pattern18, we should not hardcode the value 'E', It should be dynamic.
void pattern_18(int n) {
for (int i=0; i
Exactly
Yes bro u are 👍
He could have use
Char ch= 64+n
its wrong bro...The correct solution is....
for(int i=0;i
we can use this for coding ninjas practice
for (int i = 1; i ='A'+(n-i); ch--) {
System.out.print(ch+" ");
}
System.out.println();
}
last pattern is mind blowing!!! hard to get that logic at first sight.
i am still confused
Thanks for the great content ❤
@tip for the pattern 18 the logic in the video is hardcoded for 'E' letter alone . Kindly utilize the below solution.
void alphaTriangle(int n) {
for(int i=0;i
i think your code does opposite .
E
E D
E D C
E D C B
E D C B A
maybe letter = 'A + n-i-1
Bhaiya learning DSA from your AtoZ sheet . i am in final year I can't thank you enough for bring light in my dark future..when everyone is saying that "tumse an ho payega "I finally decided that "ab mujhse hi ho payega" thank you bhaiya .and please agle 3 month take intermediate level ka DSA sikha do.
Same stry wish the best
All the best to you😁
Bhai tumne bola ki 3 month takk intermediate DSA sikha do aur tumhare comment ke bhi 3 months ho gaye to sikh liye kya intermediate wala?
@@known878 ha bhai intermediate level ka almost complete hai . Strive ki AtoZ sheet se padha hai maine usme se question bnao shi rhega
placement lg gyi?
Literally, breaking whole concepts into 3 steps really really help me as beginner to understand patterns. Thankyou striver b :)
you are an inspiration for programming faternity! loved the way you teach. The ease with which you have taught recursion and dp is commendable. i get to learn every day from you. Thank you for being light in lives of programmers.
fr
no doubt striver bhaiya has made this playlist the best way.
The better and correct code for pattern no.18 1:01:00 would be :
void pattern18(int n){
for(int i = 0 ; i < n ; i++){
for(int j = i ; j >= 0 ; j--)
cout
yep! I did same as you, here is my java code if anyone cares
public static void pattern18(int n) {
for (int i = 0; i < n; i++) {
char ch = 'A';
char chs = (char)(ch + (n-i-1));
for(int j=0; j
@@keisergg8701 Yes bro it's correct I care
@@keisergg8701
public static void pattern18(int n){
for(int i = 0; i < n; i++){
for(char ch = (char)('E'- i); ch
@@vikasverma5685
public static void alphaTriangle(int n) {
for(int i=1;i
@@keisergg8701 I care and thanks a lot appreciate you
for code 14 we can also try :🙂
for(int i=1;i
I literally did the same... because there was error that character can not add with int..so i did with your method
@@dllychoudhary7586 You can use
cout
@@dllychoudhary7586 I am facing the same error in question 16 . What should I do?
@@TiyaBhatt4-de8sq
char ch='A';
for(int i=1; i
@@TiyaBhatt4-de8sq use type conversion
If You Start From Loop from 0 the formula will be lil bit easier helps more to understand for a beginner
23:18
For Printing
*****
****
***
**
*
for(int i=0;i
for 7th pattern if you use the formula j
Patter seventeen :@58:53
Solution is very
Here is approach
first print space then print ascending order charcater till i
Then print descending order till i-1
First loop for space: j=1 to j
this is not efficient way because the time complexity is n^3
striver i think you made a little mistake in pattern18 your considering j as E, but the start letter depends on number of rows, therefore the code will work for more test cases
void pattern18(int n){
for (int i = 1; i
Pattern 19 simpler:
def pattern19(n):
for i in range(1, 2*n + 1):
stars = n-i+1
if i > n:
stars = i-n
spaces = 2*n - 2*stars
for j in range(stars):
print("*", end="")
for k in range(spaces):
print(" ", end="")
for j in range(stars):
print("*", end="")
print()
For pattern number 12 we could also have done the following :
int space = 2 * ( n - i )...ofcourse this variable would have to be defined within the scope of the outer loop.
Besides, the problem given on the sheet and the problem redirected to by the link are actually slightly different.
Here's the code snippet for solving the problem redirected to by the link :
void printTriangle(int n)
{
for(int i = 1; i
thanks dude!! i thought y im not getting it, and u coreected me
Thankyou so much brother ! 💖
The better and correct code for pattern no.18 1:01:00 would be :
void alphaTriangle(int n) {
char a = 64+n;
for(int i = 1; i
Hey Striver, i think for the pattern 18, we should not directly start from 'E', I think according to pattern we should be starting form ('A' + n - i + 1) until ('A' + n),
for(int i = 0; i < n; i++) {
for(char ch = 'A' + (n - i - 1); ch < 'A' + n; ch++) {
cout
Yes, Ankush I also noticed this. Using this approach makes it dynamic for all inputs of 'n'. Good Job
@@shaharslan3372 WHY DYNAMIC bro ....
Thank you Striver, preciate ya!!. I just completed all the pattern problems. The last one was quite tricky as I did not quickly understand your solution. However, I have provided my solution below for others that might find it helpful and maybe easier to understand.
Intuition: Fill the 2D array (named result) with the values (n, n-1, n-2 ...) then just simply print it out (row x column)👍🏾.
You can fill the result array like this :
1. Outer loop fills the layer (A layer is a square ring of numbers).
2. Get the number to be filled per layer => int num = n - layer. Hence if n = 3, layer = 0 (first one) -> n , n - 1, n - 2 ... so we print 3, 2, & 1 per square ring.
3. Middle loop iterates over the rows of the current layer.
4. Inner loop iterates over the columns of the current layer.
static void pattern22() {
int size = 2 * n - 1;
int[][] result = new int[size][size];
for (int layer = 0; layer < n; ++layer) {
int num = n - layer;
for (int i = layer; i < size - layer; ++i) {
for (int j = layer; j < size - layer; ++j) {
result[i][j] = num;
}
}
}
for (int[] row : result) {
for (int col : row) {
System.out.print(col + " ");
}
System.out.println();
}
}
For pattern 7, why print spaces after astrix?
Simply cout
Yes, you're right, you don't need to do so
More than the premium course I have learned a lot. The lecture delivery, explanation, and expression are great, and that makes me concentrate more to watch the video. I have done all the problems on my own using your 4 pattern-solving rules. Hats off sir ❤❤❤❤❤❤❤❤❤❤
today i lost my phone. it was 19 days old. went to police station to file a report, the inspector had the same name as you
@@zenmonk29 So what, Multiple people have under the same name.
The best video on solving patterns on TH-cam! Can't thank you enough!!!😀😀
39:39 Pattern11 Could be done using different logic.
// Outer loop = rows/Lines
for (int i = 0; i < n; i++) {
// innerloop = Collumns
for (int j = 0; j
Thank You, we are all hooked up. This is gonna be a Great Series.
It doesnot come interviews i agree. But still i would urge all to do this exercise... It will help all Software engineers or aspirants to improve their problem solving skills by seeing patterns
Hmare clg m placement m ye pattern hi puche the bs 3 logo se bne the bs phle ye dekh liya hota to syd mera bhi placement ho jata but ab practice kr rhi hu
@@priyankabhagoriya276 did you get placement ? off campus?
for pattern 15 even more simpler code :
void printPattern(int n)
{
int i;
for(i=0;i
The last pattern took me some time but I just figured it out and i'm so happy 🧠🤯. Such a great feeling😊. Thank you Striver for this amazing content.
tip pattern-11
if flipping gets too annoying you can check the sun of loop variables inner and outer depending on initial condition ie i=1or 0 you can use if else statement to print correct pattern without much thinking
for(int i=1; i
UNDERSTOOD
👍
👍👍
👍👍👍
👍👍👍👍
👍👍👍👍👍
haha smart!
let n=5
for (let i=0;i
@@Apheta_a
😂
😂😂
😂😂😂
😂😂😂😂
😂😂😂😂😂
18th pattern
We should define a const char starting alphabet of each line by taking the char ch='A'+n-i (before starting the outer for loop)
void alphaTriangle(int n) {
char ch = 'A' + n - 1;
for (int i = 0; i < n; i++) {
for (char c = ch; c >= ch - i; c--) {
cout
HAPPY NEW YEAR SIR
HAVE A GREAT YEAR AHEAD
AND WE ARE VERY GLAD TO GET THE HELPING PERSON LIKE YOU FOR BEGINERS LIKE US.
52:45
void printZ(int n){
for(int i = n-1; i >= 0; i--) {
for(char ch = 'A'; ch
39:22 tip for pattern 11:
if the sum of every single (row+column) is 'even' then have to print 1 else 0
if((i + j) % 2 === 0) print(1) else print(0)
void printPattern(int n)
{
for (int i = 0; i < n; i++)
{
for (int j = 0; j
@@satyam-seth thankss.. i was having a bad time because of this
31:00
void printX(int row, int col){
for(int i = 0; i < row; i++) {
for(int j = 0; j < col; j++) {
if(i+j
whoever found the logic for the pattern 22 must be an alien.
🤣
I did found the logic myself(different but same answer though) but the logic used here is damn crazy🥲
@@LUchiha-dt6xv did you use spiral way?
@@gunasekarb3100 Idk about that😅, but divided the whole patter into 4 parts & designed the parts & framed them one by one(basically the brute force approach u could say)
@@LUchiha-dt6xv you can also try using chebyshev distance for each (i,j) from the middle-most index
Thank you Striver! I really love your videos. Small suggestion: you could have calculated time and space complexity for all the patterns.
I think most of them took O(n^2)
For the 11th Pattern, I thought if both column and row are of the same type(i.e. (even, even) and (odd, odd)) the sum of the row will be even, then we have to print 1 and when are different the sum is going to be odd. So, I tried it in a different way. Here's my approach:
for(int i=0;i
In Pattern 22, if someone is coding in c language, there is no min() function so it can be written like this by creating a function:
#include
int minimum(int a,int b, int c, int d);
int main()
{
int num=4;
int n=2*num-1;
for(int i=0;i
you can simply edit
Bruhhhhh, 😭
int minimum(int a, int b, int c, int d)
{
int min = a;
if (b
Thank you for this content! This video helped a lot!
Kindly correct the code for pattern 18 to adapt to different values of input...
void print18(int n){
for(int i=1; i
New exciting videos in new year... Thanks Striver Bhaiya.... Love from Jalpaiguri
Alternate code for pattern 5 has runtime 17ms
void seeding(int n) {
for(int i=0;i
Edited : Saw you correct it in the next question :-D
For pattern 19 , I don't think we should hard code the number of spaces as 8 and then keep on decreasing the number by 2 with each iteration , as it will only work for input n = 5. Rather there should be a general formula :
for(int i = n ; i >=1; i--){
for(int j =1; j
This is wrong bro
i did pattern 19 myself by running 6 for loops and without seeing strivers explanation based on previous patterns knowledge , it took me 2 hrs to first draw it on book and break it into smaller chunks and then write code, row number is the game changer in second half rhombus
A different yet similar approach to Pattern 11 (java)
39:22
int num = 1;
for (int i=1; i
For pattern18 if we don't want to hardcode 'E' and use it for other row numbers then we can make small change as
char initial = (char) ('A'+ (n-1));
for (int i = 0; i < n; i++) {
for (char c = (char) (initial - i); c
I was looking for this!!!
Python code for the same:
for i in range(n):
char = 65
for j in range(i+1):
print(chr((n-i-1)+char),end="")
char += 1
print('
',end="")
pattern 20 is same as pattern 19 but just interchanging the spaces and stars variables. that means no.of stars in pattern 20 will be same as no.of spaces in pattern 19 and vice-versa.
Good observation
The best video on how to code patterns. Step-2 is GOLD!
Thank you for this logic-building lecture. I'm feeling confident about pattern questions.
for pattern 16 :
int n;
cin>>n;
for(char ch = 'A' ; ch < 'A'+ n ; ch++ ){
for(int cha = 'A' ; cha
31:00 What if we don't print the last space ? Like, After the stars. Does it improve TC(Time Complexity)?
In pattern 20 , for stars and spaces we can do this way also
int stars = i;
int spaces = 2*n - 2*i;
if(i > n){
stars = 2*n - i;
space = 2*i - 2*n;
}
Nice explanation sir!
Just wanna give a general code for Pattern 18.
void pattern18(int n){
char ch= 'A'+n-1;
for(int i=0; i
UNDERSTOOD......Thank You So Much for this wonderful video..........🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻
A little catch for Pattern-7. Don't need to print last spaces. Just 2 inner for loops will work.
1:01:25
In Pattern18, we should not hardcode the value 'E', It should be dynamic.
void pattern_18(int n) {
for (int i=0; i
Exactly what I was thinking.
Hey Raj, for pattern 11 we can try this code as well which is simpler
void print11(int n)
{
for (int i = 1; i
Can simplify even further
void print11(int n)
{
for (int i = 1; i
@@sagarshah5341 kaise bhai? same hi hai dono me, n square hai dono me
@@blockyquasar I do not remember why I said that!
for pattern 7 i have tried with two inputs and using conditional statements it works well with the input of n=5 and m=9
The logic of the code is
for (int i = 1; i
What will be the frequency of lectures and will you teach the complete DSA in this course? Also what will be the tentative duration of this course? Great lec btw
Absolutely loved the video..the way you explained it made it very easy to understand complicated problems
Is anyone doing it using Java?
Me
yes
Ofc
Ofc😊
Yeah bro
Revision done😄
hello paji koi dc ya linkedin profile wagera
for question no. 18, hard coded value is written
JavaScript solution -
function printPattern(n) {
for (let i = 1; i < n+1; i++) {
let row = "";
for (let j = 1; j < i+1; j++) {
row += String.fromCharCode(65 + (n - j)) + " ";
}
console.log(row.trim());
}
}
printPattern(5);
python soln -
def alphaTriangle(n: int):
for i in range (1, n+1):
for j in range(1, i+1):
print(chr(65 + (n-j)), end = ' ')
print()
pass
one of the best videos 🔥
bhai poori to dekh le pehle
@@GauravThinks xd
Problem no. 18 code-
void alphaTriangle(int n) {
for(int i=0;i
last pattern was awesome. I followed another method and figured out some another pattern and symmetricity in it. But your approach was very informative too.
Same. From outermost square to the innermost square. I did it like this.
can u share your method?
IN problem 7 : No i think no need last space . I mean, space and star print the same thing .. Thank you sir
code:
#include
using namespace std;
#define ll long long
int main()
{
int n;
cin>>n;
for(int i=1;i
Understood! Super amazing explanation as always, thank you very much!!
/// Pattern 14 :(ALTERNATE)
void print14(int n){
for(int i=0;i
Source code ?
I have learned Star space star patterns with your trick ❤️🔥.
It would be better if you normalize and use loop from 0 or 1 for every problem :) cheers !!!
Understood.
A very clear explanation on understanding the patterns and clear approach on printing the patterns.
Better solution for Pattern no.12 (using only 2 for loop) :
#include
using namespace std;
int main()
{
int n = 9;
int start = 1;
int end = n*2;
int temp;
for (int row = 1; row
Thank you for your clear and concise explanation. I used to follow you for so long on LinkedIn, but didn't get a chance to watch your content. Now is the time for me to get prepared for a DSA interview.
Understood! Can't thank you enough, God bless you for your wonderful contribution to the community
Thank you for the video, If possible could you please share the tasks.json file here, i.e. how you're writing to the output file simultaneously.😊😊
Understood. Today is November 18th, 2024, i have started my journey with Strivers SDE sheet, i will come here periodically to update my status and my offers! Wish me luck!
If possible can you tell us another method for pattern 22? I did not understand. BTW THANKS A LOT BHAIYA
import java.util.*;
class Pattern
{
public static void main(String args[])
{
int n=7;
int c=((n+1)/2);
for(int i=0;i
awesome logic for pattern no. 22💥
Hey Striver, for the pattern 18, I guess the code will not work for n > 5, it will start printing characters lesser than 'A'.
to make it as per any value of n, make the following changes: char ch = (char)((int)'A'+n-i-1); for(int j=0;j
The logic for last one is something out of the box, great work man!!
if god choose to teach DSA it was striver
I think we should not hardcode 'E' in pattern 18, better implementation will be,
void printPattern(int n)
{
for (int i = 0; i < n; i++)
{
//letters
char ch = 'A' + n - i - 1;
for (int j = 0; j
believe me I watched the petterns videos earlier from another youtubers too but I myself wasn't able to solve a single pattern but this time this person made me do the complex patterns by my self.He is something different .Hatss off to youu bhaiya
problem 22 - For Python:
I found below approach most optimised.
If u observe (row wise):
1st half and 2nd half is a mirror (ignore middle for a while.)
1st half of a row is a combination of two parts:
a - fix part b - decremental part
for eg , for n = 6 (considering just 1st half of a row)
row1 : 666666 -> all fix , no decremental
row2 : 655555 -> 6- decremental , 55555 - fix
row3 : 654444 -> 65 - dec , 4444 - fix
row4 : 654333 -> 654 - dec , 333 - fix
derive the code for dec and fix , then combine the string to generate 1st part of a row , then neglet last character and reverse the result , concatenate both original and reverse to get full row.
time difference (n = 500 )
1. n - min() approach : 256ms
2. above approach : 54 ms
Alternate Better Solution 54:42 :
void Print17(int n)
{
for (int i = 1; i
As an alternative solution for pattern #22: every number equals to the distance from center + 1.
private static void numberPattern(int n) {
for (int i = -n+1; i < n; i++) {
for (int j = -n+1; j < n; j++) {
System.out.print(1 + Math.max(Math.abs(i), Math.abs(j)));
}
System.out.print("
");
}
}
For pattern 18 this can be tried too. It can print decreasing pattern for any no of alphabets (don't exceed n = 25 in input)
void pattern18(int n)
{
int count = n;
for(int i = 0; i
Understood..Great way of teaching
understood and finally complete this video and successfully done with all the patterns
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In pattern 19 we can't assign space for the second part of the pattern it should be dynamic,
public class Solution {
public static void symmetry(int n) {
int space = 0;
for(int i =0;i
Patern 5 alternate approach
void seeding(int n) {
for(int i=1; i= i ; j- -){
cout
One of the best man in coding community
You're answer for question 18 only gets correct answer when n is 5 because you hardcoded E into the for loop. The answer should be:
void print18(int n){
for (int i=0;i
BRO GUD TUTOR FOR DSA AND AS WELL AS FOR C++.....
WE NEED MORE UPDATEZ LIKE THIX AND THANKS FOR YOUR LECTURE BRO
Thank you GOAT !!! Never understood patterns this good .
really glad a time you spent to explain this small topic in depth 🙂
39:22 tip for pattern 11:
if the sum of every single (row+column) is 'even' then have to print 1 else 0
if((i + j) % 2 === 0) print(1) else print
@mehtabmulltani3194
Understood Everything . Your course is amazing !!!!
for pattern 18 it will always start from 'E'. Instead, we can code this way better :
void pattern18(int n){
char ch = 'A'+n;
for(int i=0;i