文章目录 一、题目二、题解 一、题目 Given an NxM matrix of positive and negative integers, write code to find the submatrix with the largest possible sum. Return an array [r1, c1, r2, c2], where r1, c1 are

Problem Write a method to replace all spaces in a string with ‘%20’. You may assume that the string has sufficient space at the end to hold the additional characters,and that you are given the “true”

Problem Given two strings,write a method to decide if one is a permutation of the other. Note: 0 <= len(s1) <= 100 0 <= len(s2) <= 100 Example1 Input: s1 = “abc”, s2 = “bca” Output: true Examp

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Problem Oh, no! You have accidentally removed all spaces, punctuation, and capitalization in a lengthy document. A sentence like “I reset the computer. It still didn’t boot!” became "iresetthecompute

Write a function to swap a number in place (that is, without temporary vari­ ables). Example: Input: numbers = [1,2] Output: [2,1] Note: numbers.length == 2 来源：力扣（LeetCode） 链接：https://leetcode-cn.

本文属于「征服LeetCode」系列文章之一，这一系列正式开始于2021/08/12。由于LeetCode上部分题目有锁，本系列将至少持续到刷完所有无锁题之日为止；由于LeetCode还在不断地创建新题，本系列的终止日期可能是永远。在这一系列刷题文章中，我不仅会讲解多种解题思路及其优化，还会用多种编程语言实现题解，涉及到通用解法时更将归纳总结出相应的算法模板。 为了方便在PC上运行调试、分享代