Problem Follow up for "Remove Duplicates":What if duplicates are allowed...

题目 Given a string S and a string T, find the minimum window in S which w...

题目 Given an array with n objects colored red, white or blue, sort them s...

题目 Write an efficient algorithm that searches for a value in an m x n ma...

题目 Given a mxn matrix, if an element is 0, set its entire row and column...

题目 Given two words word1 and word2, find the minimum number of steps req...

题目 Given a triangle, find the minimum path sum from top to bottom. Each ...

题目 Given an absolute path for a file (Unix-style), simplify it.For examp...

题目 You are climbing a stair case. It takes n steps to reach to the top. ...