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Question Given an input string, reverse the string word by word. For example, Given s = “t…

给定一个整数，从整数当中去掉k个数字，要求剩下数字形成的新整数尽可能小。 什么意思呢？让我们举几个栗子： 给定整数1593212，删去3个数字，新整数的最小情况是1212 给定整数…

Given a string, determine if it is a palindrome, considering only alphanumeric characters …

Given a string S, find the longest palindromic substring in S. You may assume that the max…

Given an integer array, find a subarray where the sum of numbers is zero. Your code should…

Given an nonnegative integer array, find a subarray where the sum of numbers is k. Your co…

Given an integer array, find a subarray with sum closest to zero. Return the indexes of th…

Given a rotated sorted array, recover it to sorted array in-place. Example [4, 5, 1, 2, 3]…

Given an integers array A. Define B[i] = A[0] * … * A[i-1] * A[i+1] * … * A[n-1], calc…

Given an array nums of integers and an int k, partition the array (i.e move the elements i…