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全部文章（共28篇）

[leetcode]435. Non-overlapping Intervals

Given a collection of intervals, find the minimum number of intervals you need to remove to make the rest of the intervals non-overlapping. Note: ...

leetcode

2017-09-18

0 536

[leetcode]394. Decode String

s = "3[a]2[bc]", return "aaabcbc". s = "3[a2[c]]", return "accaccacc". s = "2[abc]3[cd]ef", return &...

leetcode

2018-03-13

0 629

leetcode 91. Decode Ways

简单dp 感觉自己越来越差了==可能本来就是这个水平吧orz 能想到dp[i]=dp[i-1]+dp[i-2]但是写不明白，20+行的代码还要找标称其实如果想着判断两位字符是用函数封装一下，问题就是so easy 单独一位的不合法的情况只有为'0' 两位的是大于>27 如果遍历到某一位发现d...

leetcode 动态规划 dp

2018-04-10

0 728

leetcode 5 Longest Palindromic Substring【manacher算法】

Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example 1: Input: "babad"...

leetcode python 最长回文串 manacher

2018-07-06

0 729

leecode 135. Candy【贪心】

https://leetcode.com/problems/candy/description/ There are N children standing in a line. Each child is assigned a rating value. You are giving candi...

leetcode 笔试题贪心

2018-04-08

0 506

leetcode3 Longest Substring Without Repeating Characters【Python刷题】【哈希】

Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc...

leetcode 哈希 Python

2018-06-29

0 629

leetcode 12. Integer to Roman【Python】模拟

Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X ...

leetcode Python

2018-07-30

0 534

leetcode 48. Rotate Image【旋转90】

https://leetcode.com/problems/rotate-image/description/ You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (cloc...

leetcode

2018-10-22

0 532

leetcode 16 3Sum Closest【双指针变形】

Given an array nums of n integers and an integer target, find three integers in nums such that the sum is closest to target. Return the sum of the thr...

leetcode

2018-09-05

0 532

leetcode17Letter Combinations of a Phone Number【队列】

Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. A mapping of digit to l...

leetcode 队列

2018-09-12

0 516