Kth Missing Positive Number || Binary Search || 2-Pointers || Leetcode-1539

In this video, I'll talk about how to solve the problem - Kth Missing Positive Number - here we solve this by || 2-Pointers || Binary Search Algorithm.
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[@ARYANMITTAL]

Code: leetcode.com/problems/kth-missing-positive-number/solutions/3262503/white-board-solution-binary-search-2-pointers-video-solution-intution/?orderBy=most_votes

[@abhaykumarsingh3884]

public int findKthPositive(int[] arr, int k) { //brute force(Two pointer)(O(n))
int num=1;
int count=0;
for(int i=0;i

[@devanshshrimali2125]

great explianation

[@dixitnakhva6181]

Thank you sir

[@aryangupta3257]

Not working with testcase k =1 and array {32,59,77} ans should be 33 according to gfg.

[@user-qb8uo3pf4w]

THANKS BROOOOOOOOOOOOOOOOOOOO

[@yashwants18]

What if k > last element of arr?

[@rakibulhasanrumon4884]

why there is l+k at the last, and why not r+k?

[@ARYANMITTAL]

Both are possible and will give correct result as l==r , hope that solves the doubt :)

[@sandeeparn]

Why at last l+k and not r+k

[@ARYANMITTAL]

Both are possible and will give correct result as l==r , hope that solves the doubt :)