轉載請注明出處：http://www.cnblogs.com/liangyongrui/p/6354552.html? ? 異或的妙用。 leetcode124。? 一開始讀題不仔細，以為有很多的孤立數字。 沒想到就兩個- - ? leetcode15、然后參考了別人的思路。 ? 具體見代碼： public int[] singleNumber(int[

Leetcode ?448. Find All Numbers Disappeared in an Array Add to List Description?Submission?Solutions Total Accepted:?31266Total Submissions:?58997Difficulty:?EasyContributors:?yuhaowang001 ? Given an array of integers where 1 ≤ a[i] ≤?n?(n?= size of

原題 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://tinyurl.com/4e9iAk. Design the encode and decode methods for the TinyURL service. There is no res

問題描述： leetcode124。給定一個數組 nums，編寫一個函數將所有 0 移動到數組的末尾，同時保持非零元素的相對順序。 示例: 輸入: [0,1,0,3,12] 輸出: [1,3,12,0,0] 說明: 必須在原數組上操作，不能拷貝額外的數組。盡量減少操作次數。方法1：

204.?Count Primes Count the number of prime numbers less than a non-negative number,?n. Example: Input: 10 Output: 4 Explanation: There are 4 prime numbers less than 10, they are 2, 3, 5, 7.題意：找素數，找n以內有多少個素數篩數法統計 class So

題目描述： Given a non-empty string?s, you may delete?at most?one character. Judge whether you can make it a palindrome. leetcode 340？Example 1: Input: "aba" Output: True ? Example 2: Input: "abca" Output: True Explanation: You coul

1.題目描述 Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters for "abcabcbb" is "abc", which the length is 3. For "bbbbb" the longest

題目鏈接 Given two binary strings, return their sum (also a binary string). leetcode1120。For example, a = "11" b = "1" Return "100". 分析：簡單的處理二進制求和和進位即可??????????????????????????????????????? 本文地址

問題鏈接 LeetCode 33. Search in Rotated Sorted Array 題目解析 給定一個 “升序” 的 無重復 數組，從中尋找目標值。“升序”：旋轉后的升序，例如 [4，5，1，2，3]。 時間限制：\(O(lgN)\)。 解題思路 題目要求在 \(O(l

題目：一個數組，倆人從里面取數，要么從最左邊取，要么從最右邊取，直至把所有數取完，若第一個人取得所有數之和比第二個人取得數之和大，則為true 輸入：一個整型數組 輸出：true or false leetcode15。別人思路&#x