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LeetCode: 193. Valid Phone Numbers

LeetCode: 193. Valid Phone Numbers 题目描述 Given a text file file.txt that contains list of phone numbers (one per line), write a one liner bash script...

2018-09-03

0 475

LeetCode: 899. Orderly Queue

LeetCode: 899. Orderly Queue 题目描述 A string S of lowercase letters is given. Then, we may make any number of moves. In each move, we choose one of t...

2018-09-02

0 502

LeetCode: 898. Bitwise ORs of Subarrays

LeetCode: 898. Bitwise ORs of Subarrays 题目描述 We have an array A of non-negative integers. For every (contiguous) subarray B = [A[i], A[i+1], ..., A...

2018-09-02

0 537

LeetCode：897. Increasing Order Search Tree

LeetCode：897. Increasing Order Search Tree 解题思路 Given a tree, rearrange the tree in in-order so that the leftmost node in the tree is now the root o...

2018-09-02

0 561

LeetCode: 896. Monotonic Array

LeetCode: 896. Monotonic Array 题目描述 An array is monotonic if it is either monotone increasing or monotone decreasing. An array A is monotone increa...

2018-09-02

0 470

LeetCode: Weekly Contest 100

LeetCode: Weekly Contest 100 题目描述 1. LeetCode: 896. Monotonic Array 题解遍历数组，标记升序/降序情况。当发现后面的元素与前面的标记冲突时，则返回 false, 否则返回 true。 2. LeetCode: 89...

2018-09-02

0 434

LeetCode: 192. Word Frequency

LeetCode: 192. Word Frequency 题目描述 Write a bash script to calculate the frequency of each word in a text file words.txt. For simplicity sake, you m...

2018-09-01

0 496

LeetCode: 199. Binary Tree Right Side View

LeetCode: 199. Binary Tree Right Side View 题目描述 Given a binary tree, imagine yourself standing on the right side of it, return the values of the nod...

2018-08-31

0 463

LeetCode: 191. Number of 1 Bits

LeetCode: 191. Number of 1 Bits 题目描述 Write a function that takes an unsigned integer and returns the number of '1' bits it has (also known as the Ha...

2018-08-30

0 441

LeetCode: 190. Reverse Bits

LeetCode: 190. Reverse Bits 题目描述 Reverse bits of a given 32 bits unsigned integer. Example: Input: 43261596 Output: 964176192 Explanation: 4326159...

2018-08-29

0 541