1. LCA in a binary tree 2. Find the medium of two sorted array 3. Find a number in a partially sorted matrix (the matrix is sorted column-wise and row-wise)
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There are n petrol bunks arranged in circle. Each bunk is separated from the next one by a certain distance. You choose some mode of travel which needs 1 litre of petrol to cover 1 km distance. You can't draw any amount of petrol from each bunk, but each bunk has some limited petrol. Find if there is any point in the circle from which you can start? If there is one such point find the point.
Write a function to remove duplicates from a list of characters.
usually they ask you to rate yourself out of 10 your coding skills
Algorithms for Sorting an array
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Machine coding round of Facebook Implement show feeds, follow friends, unfollow friendd
Longest palindrome subsequence, given a non empty string.
Solve Mathematical Expression using Stack
code linked list from scratch
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