hellowOOOrld

2017年5月19日

摘要： Write a program to check whether a given number is an ugly number.Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For exam 阅读全文

posted @ 2017-05-19 22:55 hellowOOOrld 阅读(79) 评论(0) 推荐(0) 编辑

[leetcode-191-Number of 1 Bits]

摘要： Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight). For example, the 32-bit 阅读全文

posted @ 2017-05-19 22:37 hellowOOOrld 阅读(123) 评论(0) 推荐(0) 编辑

[leetcode-513-Find Bottom Left Tree Value]

摘要： Given a binary tree, find the leftmost value in the last row of the tree. Example 1: Input: 2 / \ 1 3 Output: 1 Example 2: Input: 1 / \ 2 3 / / \ 4 5 阅读全文

posted @ 2017-05-19 15:13 hellowOOOrld 阅读(151) 评论(0) 推荐(0) 编辑

[leetcode-338-Counting Bits]

摘要： Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and r 阅读全文

posted @ 2017-05-19 10:46 hellowOOOrld 阅读(169) 评论(0) 推荐(0) 编辑

2017年5月18日

[leetcode-535-Encode and Decode TinyURL]

摘要： TinyURL is a URL shortening service where you enter a URL such as https://leetcode.com/problems/design-tinyurl and it returns a short URL such as http 阅读全文

posted @ 2017-05-18 14:28 hellowOOOrld 阅读(244) 评论(0) 推荐(0) 编辑

[leetcode-283-Move Zeroes]

摘要： 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, giv 阅读全文

posted @ 2017-05-18 08:58 hellowOOOrld 阅读(108) 评论(0) 推荐(0) 编辑

2017年5月17日

[leetcode-226-Invert Binary Tree]

摘要： Invert a binary tree. 4 / \ 2 7 / \ / \ 1 3 6 9 to 4 / \ 7 2 / \ / \ 9 6 3 1 Trivia: This problem was inspired by this original tweet by Max Howell: G 阅读全文

posted @ 2017-05-17 21:14 hellowOOOrld 阅读(99) 评论(0) 推荐(0) 编辑

[leetcode-583-Delete Operation for Two Strings]

摘要： Given two words word1 and word2, find the minimum number of steps required to make word1 and word2 the same, where in each step you can delete one cha 阅读全文

posted @ 2017-05-17 17:32 hellowOOOrld 阅读(415) 评论(0) 推荐(0) 编辑

[leetcode-582-Kill Process]

摘要： Given n processes, each process has a unique PID (process id) and its PPID (parent process id). Each process only has one parent process, but may have 阅读全文

posted @ 2017-05-17 08:38 hellowOOOrld 阅读(352) 评论(0) 推荐(0) 编辑

2017年5月16日

[leetcode-581-Shortest Unsorted Continuous Subarray]

摘要： Given an integer array, you need to find one continuous subarray that if you only sort this subarray in ascending order, then the whole array will be 阅读全文

posted @ 2017-05-16 19:23 hellowOOOrld 阅读(406) 评论(0) 推荐(0) 编辑

hello world~

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