Best Time to Buy and Sell Stock IV题目Say you have an array for which the ith element is the price of a given stock on day

Best Time to Buy and Sell Stock题目Say you have an array for which the ith element is the price of a given stock on day i.

Best Time to Buy and Sell Stock题目Say you have an array for which the ith element is the price of a given stock on day i.

Climbing Stairs题目You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 o

Maximum Subarray题目Given an integer array nums, find the contiguous subarray (containing at least one number) which has t

5. Longest Palindromic Substring题目Given a string s, find the longest palindromic substring in s. You may assume that the