子宽的专栏

QuestionIn a given array nums of positive integers, find three non-overlapping subarrays with maximum sum.Each subarray will be of size k, and we want to maximize the sum of all 3*k entries.Return the...

QuestionGiven string S and a dictionary of words words, find the number of words[i] that is a subsequence of S.Example :Input: S = "abcde" words = ["a", "bb", "acd", "ace"] Output: 3 Explanation: The...

QuestionIn the video game Fallout 4, the quest "Road to Freedom" requires players to reach a metal dial called the "Freedom Trail Ring", and use the dial to spell a specific keyword in order to open t...

QuestionGiven a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and return them as an array.ExampleFor num = 5 ...

QuestionGiven a string S, find the number of different non-empty palindromic subsequences in S, and return that number modulo 10^9 + 7.A subsequence of a string S is obtained by deleting 0 or more cha...

QuestionGiven a positive integer n, break it into the sum of at least two positive integers and maximize the product of those integers. Return the maximum product you can get.For example, given n = 2,...

QuestionGiven an array which consists of non-negative integers and an integer m, you can split the array into m non-empty continuous subarrays. Write an algorithm to minimize the largest sum among the...