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Ternary Expression a?b:c  a / \b   ca?b?c:d:e    a   / \  b   e / \c   da?b:c?d:e   a  / \ b   c    / \   d   einput: String exproutput: Expression

Implement strStr()Implement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.Update (2014-11-02):The signatur

Maximum Product Subarray Find the contiguous subarray within an array (containing at least one number) which has the largest product.For example, given the array [2,3,-2,4],the contiguou

Given a list and a number k, print out the top k most repeating elements in the list.1. Use hashmap to store the pair of number and count.2. Use priority queue to store the hash node based on

A long array A[] is given to you. There is a sliding window of size w which is moving from the very left of the array to the very right. You can only see the w numbers in the window. Each time the