随笔分类 - LeetCode
摘要：question: try: result: 22.58% conclusion: dm
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摘要：question: try: result: conclusion: 对这个题无语。 一开始我在想暴力法，先找到所有substring，再找最长的那个。但是好复杂。 看了讨论区，一个人说这是愚人节的题目。。才找到思路。。
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摘要：question: try: result: re-try: result: conclusion: 效率很低，n2. 看讨论区里的posts，发现主要问题在于对于n和n+1，我的方法是重新计算n+1是否good，浪费。如果使用dp，可以利用n是否good这个结论，从而降低复杂度。 讨论区里面还有一
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摘要：question: 分析： 先根遍历 try: result: conclusion:
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摘要：question: first: result: Submission Detail 46 / 46 test cases passed. Status: Accepted Runtime: 26 ms Submitted: 0 minutes ago 46 / 46 test cases pass
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摘要：question: first: result: second: result: conclusion:
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摘要：Problem: try: result: 想当然！ second: result: 被这个stupid的问题卡了好久。。因为leetcode的编辑器没有数据类型的关键字高亮提示，所以把这个问题忽略了，int是不能作为变量名称使用的。 re-try: result: 分析： 用LinkedHashM
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摘要：problem: Given a word, you need to judge whether the usage of capitals in it is right or not. We define the usage of capitals in a word to be right wh
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摘要：Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order. E
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摘要：problem: first: result: second try: result: 换成StringBuffer，效果竟然一样？？ 3nd: result: 可见，用数组代替string和StringBuffer或StringBuilder会更快。 4th: result: conclusion
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摘要：problem: first: result: Submission Result: Wrong Answer Input: "RLUURDDDLU" Output: false 2: result: 参考答案： result： retry: result: conclusion: 可见把Strin
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摘要：problem: Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The
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摘要：问题： Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. You may assume that
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摘要：问题： Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements of [1,
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摘要：question: question: Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. Example 1 Ex
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摘要：Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the arr
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摘要：Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. Your t
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摘要：问题： We have two special characters. The first character can be represented by one bit 0. The second character can be represented by two bits (10 or 11
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摘要：问题： Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements. For example,
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摘要：题目： Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.
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