Leetcode - 随笔分类(第8页) - Beserious

leetcode 660. Remove 9

摘要：Start from integer 1, remove any integer that contains 9 such as 9, 19, 29... So now, you will have a new integer sequence: 1, 2, 3, 4, 5, 6, 7, 8, 10 阅读全文

posted @ 2017-08-14 09:54 Beserious 阅读(247) 评论(0) 推荐(0) 编辑

leetcode 395. Longest Substring with At Least K Repeating Characters

摘要：Find the length of the longest substring T of a given string (consists of lowercase letters only) such that every character in T appears no less than 阅读全文

posted @ 2017-08-11 16:26 Beserious 阅读(133) 评论(0) 推荐(0) 编辑

leetcode 442. Find All Duplicates in an Array

摘要：Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear twi 阅读全文

posted @ 2017-08-10 22:11 Beserious 阅读(167) 评论(0) 推荐(0) 编辑

leetcode 405. Convert a Number to Hexadecimal

摘要：Given an integer, write an algorithm to convert it to hexadecimal. For negative integer, two’s complement method is used. Note: Example 1: Example 2: 阅读全文

posted @ 2017-08-08 15:26 Beserious 阅读(153) 评论(0) 推荐(0) 编辑

leetcode 242. Valid Anagram

摘要：Given two strings s and t, write a function to determine if t is an anagram of s. For example,s = "anagram", t = "nagaram", return true.s = "rat", t = 阅读全文

posted @ 2017-08-08 11:51 Beserious 阅读(152) 评论(0) 推荐(0) 编辑

leetcode 506. Relative Ranks

摘要：Given scores of N athletes, find their relative ranks and the people with the top three highest scores, who will be awarded medals: "Gold Medal", "Sil 阅读全文

posted @ 2017-08-08 10:32 Beserious 阅读(114) 评论(0) 推荐(0) 编辑

leetcode 316. Remove Duplicate Letters

摘要：Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your 阅读全文

posted @ 2017-08-07 19:31 Beserious 阅读(200) 评论(0) 推荐(0) 编辑

leetcode 654. Maximum Binary Tree

摘要：Given an integer array with no duplicates. A maximum tree building on this array is defined as follow: Construct the maximum tree by the given array a 阅读全文

posted @ 2017-08-07 10:33 Beserious 阅读(238) 评论(0) 推荐(0) 编辑

leetcode 653. Two Sum IV - Input is a BST

摘要：Given a Binary Search Tree and a target number, return true if there exist two elements in the BST such that their sum is equal to the given target. E 阅读全文

posted @ 2017-08-07 10:30 Beserious 阅读(375) 评论(0) 推荐(0) 编辑

leetcode 656. Coin Path

摘要：Given an array A (index starts at 1) consisting of N integers: A1, A2, ..., AN and an integer B. The integer B denotes that from any place (suppose th 阅读全文

posted @ 2017-08-06 22:14 Beserious 阅读(883) 评论(0) 推荐(0) 编辑

leetcode 258. Add Digits

摘要：Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process is like: 阅读全文

posted @ 2017-08-06 21:02 Beserious 阅读(133) 评论(0) 推荐(0) 编辑

leetcode 231. Power of Two

摘要：Given an integer, write a function to determine if it is a power of two. 阅读全文

posted @ 2017-08-05 22:33 Beserious 阅读(142) 评论(0) 推荐(0) 编辑

leetcode 400 Add to List 400. Nth Digit

摘要：Find the nth digit of the infinite integer sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ... Note:n is positive and will fit within the range of a 32-bi 阅读全文

posted @ 2017-08-04 22:51 Beserious 阅读(164) 评论(0) 推荐(0) 编辑

leetcode 209. Minimum Size Subarray Sum

摘要：Given an array of n positive integers and a positive integer s, find the minimal length of a contiguous subarray of which the sum ≥ s. If there isn't 阅读全文

posted @ 2017-08-03 18:35 Beserious 阅读(144) 评论(0) 推荐(0) 编辑

103. Binary Tree Zigzag Level Order Traversal

摘要：Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and 阅读全文

posted @ 2017-07-31 15:04 Beserious 阅读(126) 评论(0) 推荐(0) 编辑

leetcode 226. Invert Binary Tree

摘要：Invert a binary tree. to . 阅读全文

posted @ 2017-07-30 20:26 Beserious 阅读(126) 评论(0) 推荐(0) 编辑

leetcode 520. Detect Capital

摘要：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 when one of 阅读全文

posted @ 2017-07-30 19:59 Beserious 阅读(139) 评论(0) 推荐(0) 编辑

leetcode 414. Third Maximum Number

摘要：Given a non-empty array of integers, return the third maximum number in this array. If it does not exist, return the maximum number. The time complexi 阅读全文

posted @ 2017-07-29 19:00 Beserious 阅读(138) 评论(0) 推荐(0) 编辑

leetcode 532. K-diff Pairs in an Array

摘要：Given an array of integers and an integer k, you need to find the number of unique k-diff pairs in the array. Here a k-diff pair is defined as an inte 阅读全文

posted @ 2017-07-29 15:30 Beserious 阅读(173) 评论(0) 推荐(0) 编辑

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 @ 2017-07-29 12:41 Beserious 阅读(136) 评论(0) 推荐(0) 编辑

随笔分类 - Leetcode