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1313.Decompress Run-Length Encoded ListWe are given a list nums of integers representing a list compressed with run-length encoding.Consider each adjacent pair of elements [freq, val] = [nums[2*...

905.Sort Array By ParityGiven an array A of non-negative integers, return an array consistingof all the even elements of A, followed by all the odd elements of A.You may return any answer array ...

561.Array Partition 1Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, bi) for all i fr...

26.Remove Duplicates from Sorted ArrayGiven a sorted array nums, remove the duplicates in-place such that each element appear only once and return the new length.Do not allocate extra space for ...

编程题：抛小球小东和三个朋友一起在楼上抛小球，他们站在楼房的不同层，假设小东站的楼层距离地面N米，球从他手里自由落下，每次落地后反跳回上次下落高度的一半，并以此类推直到全部落到地面不跳，求四个小球一共经历了多少米？（数字都为整数）给定四个整数A,B,C,D,请返回所求结果。测试样例：100,90,80,70返回：1020解题要点：以为数字都为整数，所以存在N

1.TwoSumGiven an array of integers, return indices of the two numbers such that they add up to a specific target.You may assume that each input would have exactly one solution, and you may not us...