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随笔分类 -  每日刷题

• 调整数组为不降的序列
  摘要：题目 You are given an array of integers in an arbitrary order. Return whether or not it is possible to make the array non decreasing by modifying at mos 阅读全文
  posted @ 2019-10-13 23:39 Optimus_Prime 阅读(245) 评论(0) 推荐(0)
• 找到数组中唯一不重复的元素
  摘要：题目 Given a list of numbers, where every number shows up twice except for one number, find that one number. Example: Input: [4, 3, 2, 4, 1, 3, 2] Outpu 阅读全文
  posted @ 2019-10-13 03:01 Optimus_Prime 阅读(803) 评论(0) 推荐(0)
• Two Sum
  摘要：题目 You are given a list of numbers, and a target number k. Return whether or not there are two numbers in the list that add up to k. Example: Given [4 阅读全文
  posted @ 2019-10-12 00:54 Optimus_Prime 阅读(93) 评论(0) 推荐(0)
• 排序一个仅有3个唯一数字元素组成的列表
  摘要：题目 Given a list of numbers with only 3 unique numbers (1, 2, 3), sort the list in O(n) time. Example 1: Input: [3, 3, 2, 1, 3, 2, 1] Output: [1, 1, 2, 阅读全文
  posted @ 2019-10-11 16:47 Optimus_Prime 阅读(165) 评论(0) 推荐(0)
• 反转链表
  摘要：题目 Given a singly linked list, reverse the list. This can be done iteratively or recursively. Can you get both solutions? Example: Input: 4 3 2 1 0 NU 阅读全文
  posted @ 2019-10-10 01:30 Optimus_Prime 阅读(121) 评论(0) 推荐(0)
• 数组元素查找
  摘要：题目 Given a sorted array, A, with possibly duplicated elements, find the indices of the first and last occurrences of a target element, x. Return 1 if 阅读全文
  posted @ 2019-10-09 01:18 Optimus_Prime 阅读(211) 评论(0) 推荐(0)
• 括号匹配问题
  摘要：题目 Imagine you are building a compiler. Before running any code, the compiler must check that the parentheses in the program are balanced. Every openi 阅读全文
  posted @ 2019-10-08 02:40 Optimus_Prime 阅读(196) 评论(0) 推荐(0)
• 最大回文子串
  摘要：题目 A palindrome is a sequence of characters that reads the same backwards and forwards. Given a string, s, find the longest palindromic substring in s 阅读全文
  posted @ 2019-10-08 02:34 Optimus_Prime 阅读(245) 评论(0) 推荐(0)
• 找出不含重复字符的最长子串的长度
  摘要：题目 Given a string, find the length of the longest substring without repeating characters. 分析 任意2个重复的字符不可能同时存在于一个合法的子串中。因此，可以从左到右扫描字符，用一个字典记录出现过的字符。 一旦 阅读全文
  posted @ 2019-10-08 02:24 Optimus_Prime 阅读(408) 评论(0) 推荐(0)
• 链表表示的2个数相加
  摘要：问题描述 You are given two linked lists representing two non negative integers. The digits are stored in reverse order and each of their nodes contain a s 阅读全文
  posted @ 2019-10-08 02:18 Optimus_Prime 阅读(192) 评论(0) 推荐(0)