04 2018 档案
摘要：On a horizontal number line, we have gas stations at positions stations[0], stations[1], ..., stations[N-1], where N = stations.length. Now, we add K
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摘要：On an 2 x 3 board, there are five tiles labeled from 1 to 5, and an empty square represented by 0. A move consists of choosing 0 and a 4-directionally
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摘要：Given an expression such as expression = "e + 8 - a + 5" and an evaluation map such as {"e": 1} (given in terms of evalvars = ["e"] and evalints = [1]
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摘要：You're given strings J representing the types of stones that are jewels, and S representing the stones you have. Each character in Sis a type of stone
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摘要：话说博主在写 Max Chunks To Make Sorted II 这篇帖子的解法四时，写到使用单调栈Monotone Stack的解法时，突然脑中触电一般，想起了之前曾经在此贴 LeetCode All in One 题目讲解汇总(持续更新中...) 的留言区中说要写单调栈的总结帖，当时答应了
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摘要：Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or
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摘要：This question is the same as "Max Chunks to Make Sorted" except the integers of the given array are not necessarily distinct, the input array could be
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摘要：Given an array arr that is a permutation of [0, 1, ..., arr.length - 1], we split the array into some number of "chunks" (partitions), and individuall
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摘要：Given a string S, check if the letters can be rearranged so that two characters that are adjacent to each other are not the same. If possible, output
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摘要：Given an array of characters, compress it in-place. The length after compression must always be smaller than or equal to the original array. Every ele
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摘要：A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element. Now given an M x N matrix, return True if and only if the m
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摘要：N couples sit in 2N seats arranged in a row and want to hold hands. We want to know the minimum number of swaps so that every couple is sitting side b
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摘要：在iOS开发中，按钮图标可以放三种大小，常见的是22x22，44x44，66x66，一般来说我们可以在PS中做好图片后，再分别导出三种大小的图标，但是每次要修改图片的大小，操作比较繁琐。这里博主推荐一种使用命令行来快速对图片的大小进行转换，比如我们用PS做好了图以后，先导出66x66大小的图片，命名
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