leetcode - 随笔分类 - sure0328

37. Sudoku Solver

摘要：Write a program to solve a Sudoku puzzle by filling the empty cells. Empty cells are indicated by the character '.'. You may assume that there will be 阅读全文

posted @ 2017-07-14 16:38 sure0328 阅读(107) 评论(0) 推荐(0)

44. Wildcard Matching

摘要：Implement wildcard pattern matching with support for '?' and '*'. 所以考虑用回溯。此博客讲解的很详细，http://blog.csdn.net/u012848330/article/details/52596618 阅读全文

posted @ 2017-07-12 14:09 sure0328 阅读(82) 评论(0) 推荐(0)

32. Longest Valid Parentheses

摘要：Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. For "(()", the lo 阅读全文

posted @ 2017-07-12 10:44 sure0328 阅读(85) 评论(0) 推荐(0)

7. Reverse Integer

摘要：Reverse digits of an integer. Example1: x = 123, return 321Example2: x = -123, return -321 click to show spoilers. Note:The input is assumed to be a 3 阅读全文

posted @ 2017-07-11 23:03 sure0328 阅读(90) 评论(0) 推荐(0)

82. Remove Duplicates from Sorted List II

摘要：Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. For example,Given 1->2 阅读全文

posted @ 2017-07-11 17:00 sure0328 阅读(88) 评论(0) 推荐(0)

67. Add Binary

摘要：Given two binary strings, return their sum (also a binary string). For example,a = "11"b = "1"Return "100". 阅读全文

posted @ 2017-07-11 16:24 sure0328 阅读(88) 评论(0) 推荐(0)

66. Plus One

摘要：Given a non-negative integer represented as a non-empty array of digits, plus one to the integer. You may assume the integer do not contain any leadin 阅读全文

posted @ 2017-07-11 16:03 sure0328 阅读(98) 评论(0) 推荐(0)

leetcode 88. Merge Sorted Array

摘要：Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note:You may assume that nums1 has enough space (size tha 阅读全文

posted @ 2017-07-11 15:23 sure0328 阅读(113) 评论(0) 推荐(0)

leetcode 10. Regular Expression Matching

摘要：Implement regular expression matching with support for '.' and '*'. 1.p为空，那s必然也为空 2.s为空，看p的第二字符是否为*，为*的话则为isMatch(s,p.substring(2)); 3.都不为空，p的第二字符为*，阅读全文

posted @ 2017-07-11 15:04 sure0328 阅读(111) 评论(0) 推荐(0)

leetcode 169. Majority Element

摘要：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 the 阅读全文

posted @ 2017-07-11 11:23 sure0328 阅读(78) 评论(0) 推荐(0)

leetcode 300. Longest Increasing Subsequence

摘要：Given an unsorted array of integers, find the length of longest increasing subsequence. For example,Given [10, 9, 2, 5, 3, 7, 101, 18],The longest inc 阅读全文

posted @ 2017-07-07 13:46 sure0328 阅读(83) 评论(0) 推荐(0)

leetcode 279. Perfect Squares

摘要：leetcode 279. Perfect Squares Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to 阅读全文

posted @ 2017-07-06 17:34 sure0328 阅读(97) 评论(0) 推荐(0)

leetcode 264. Ugly Number II

摘要：leetcode 264. Ugly Number II Write a program to find the n-th ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. 阅读全文

posted @ 2017-07-06 16:33 sure0328 阅读(112) 评论(0) 推荐(0)

leetcode 152. Maximum Product Subarray

摘要：leetcode 152. Maximum Product Subarray Find the contiguous subarray within an array (containing at least one number) which has the largest product. Fo 阅读全文

posted @ 2017-07-06 15:59 sure0328 阅读(95) 评论(0) 推荐(0)

leetcode 120. Triangle

摘要：leetcode 120. Triangle Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below. Fo 阅读全文

posted @ 2017-07-06 10:09 sure0328 阅读(106) 评论(0) 推荐(0)

leetcode 304. Range Sum Query 2D - Immutable

摘要：leetcode 304. Range Sum Query 2D - Immutable Given a 2D matrix matrix, find the sum of the elements inside the rectangle defined by its upper left cor 阅读全文

posted @ 2017-07-06 09:23 sure0328 阅读(162) 评论(0) 推荐(0)

leetcode 303. Range Sum Query - Immutable

摘要：leetcode 303. Range Sum Query - Immutable Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. Exampl 阅读全文

posted @ 2017-07-05 16:17 sure0328 阅读(154) 评论(0) 推荐(0)

leetcode 91. Decode Ways

摘要：leetcode 91. Decode Ways A message containing letters from A-Z is being encoded to numbers using the following mapping: Given an encoded message conta 阅读全文

posted @ 2017-07-04 09:53 sure0328 阅读(99) 评论(0) 推荐(0)

leetcode 213. House Robber II

摘要：leetcode 213. House Robber II Note: This is an extension of House Robber. After robbing those houses on that street, the thief has found himself a new 阅读全文

posted @ 2017-07-04 09:15 sure0328 阅读(123) 评论(0) 推荐(0)

leetcode 198. House Robber

摘要：leetcode 198. House Robber You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the 阅读全文

posted @ 2017-07-03 17:57 sure0328 阅读(110) 评论(0) 推荐(0)

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