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Leetcode 122 Best Time to Buy and Sell Stock II题目原文Say you have an array for which the ith element is the price of a given stock on dayi.Design an algorithm to find the maximum profit. You m

Leetcode 452 Minimum Number of Arrows to Burst Balloons题目原文There are a number of spherical balloons spread in two-dimensional space. For each balloon, provided input is the start and end coordin

Leetcode 621 Task Scheduler题目原文Given a char array representing tasks CPU need to do. It contains capital letters A to Z where different letters represent different tasks.Tasks could be done with

Leetcode 553 Optimal Division题目原文Given a list of positive integers, the adjacent integers will perform the float division. For example, [2,3,4] -> 2 / 3 / 4.However, you can add any number of

Leetcode 561 Array Partition I题目原文Given an array of 2n integers, your task is to group these integers inton pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, b