码迷,mamicode.com
首页 >  
搜索关键字:运维 面试    ( 30792个结果
LeetCode: Remove Nth Node From End of List [019]
【题目】 Given a linked list, remove the nth node from the end of list and return its head. For example, Given linked list: 1->2->3->4->5, and n = 2. After removing the second node from the end, the linked list becomes 1->2->3->5. Note: Given n will ...
分类:其他好文   时间:2014-05-18 18:48:03    阅读次数:269
LeetCode 016 3Sum Closest
【题目】 Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would have exactly one solution. For example, given array S = {...
分类:其他好文   时间:2014-05-18 10:37:57    阅读次数:269
LeetCode: Valid Parentheses [020]
【题目】 Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]" are not. 【题意】 判断给定的字符串是否是合法的...
分类:其他好文   时间:2014-05-18 10:08:11    阅读次数:327
LeetCode: Generate Parentheses [021]
【题目】 Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, given n = 3, a solution set is: "((()))", "(()())", "(())()", "()(())", "()()()" 【题意】 给定n对括号,输出所有可行的括号组合字符串。所谓合法,就是可以Valid Pare...
分类:其他好文   时间:2014-05-18 09:06:41    阅读次数:266
LeetCode: Merge k Sorted Lists [022]
【题目】 Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. 【题意】 合并K个有序链表 【思路】 归并 Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For ...
分类:其他好文   时间:2014-05-18 09:05:40    阅读次数:255
LeetCode 017 4Sum
【题目】 Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target. Note: Elements in a quadruplet (a,b,c,d) must be in non-descending ord...
分类:其他好文   时间:2014-05-18 08:46:04    阅读次数:227
LeetCode 013 Roman to Integer
【题目】 Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 【题意】 把罗马数转换为整数 【思路】 罗马数字中只使用如下七个基值字母:M,D,C,L,X,V,I,分别用来表示1000、500、100、50、10、5、1。 大体思路是每个罗马字母对应的值相加即可, 但需要处理900, 400, 90, 40, 9, 4这几个特殊...
分类:其他好文   时间:2014-05-18 07:58:54    阅读次数:293
LeetCode: Letter Combinations of a Phone Number [018]
【题目】 Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below. Input:Digit string "23" Output: ["ad", "ae", "af", "bd", "be", "bf",...
分类:其他好文   时间:2014-05-18 07:30:12    阅读次数:340
LeetCode 014 Longest Common Prefix
【题目】 Write a function to find the longest common prefix string amongst an array of strings. 【题意】 求一组字符串的最长公共前缀 【思路】 使用归并思想求解 要求字符串[1,2,..,k,k+1,...n]的最大公共前缀,先分别求[1,2,...k]和[k+1,...,n]的公共前缀...
分类:其他好文   时间:2014-05-18 05:17:53    阅读次数:232
LeetCode 015 3Sum
【题目】 Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero. Note: Elements in a triplet (a,b,c) must be in non-descending order. (ie, a ≤ b ≤ c) The so...
分类:其他好文   时间:2014-05-18 03:15:50    阅读次数:287
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!