穆穆兔兔 - 博客园

2015年2月8日

摘要： Implement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.Update (2014-11-02):The si... 阅读全文

posted @ 2015-02-08 15:29 穆穆兔兔阅读(159) 评论(0) 推荐(0)

[LeetCode] Remove Element

摘要： Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn't mat... 阅读全文

posted @ 2015-02-08 15:05 穆穆兔兔阅读(133) 评论(0) 推荐(0)

[LeetCode] Reverse Nodes in k-Group

摘要： Given a linked list, reverse the nodes of a linked listkat a time and return its modified list.If the number of nodes is not a multiple ofkthen left-o... 阅读全文

posted @ 2015-02-08 14:41 穆穆兔兔阅读(174) 评论(0) 推荐(0)

[LeetCode] Swap Nodes in Pairs

摘要： Given a linked list, swap every two adjacent nodes and return its head.For example,Given1->2->3->4, you should return the list as2->1->4->3.Your algor... 阅读全文

posted @ 2015-02-08 10:31 穆穆兔兔阅读(128) 评论(0) 推荐(0)

2015年2月7日

[LeetCode] Merge k Sorted Lists

摘要： Mergeksorted linked lists and return it as one sorted list. Analyze and describe its complexity.方法一：实现merger2Lists，然后两个两个List Merge，直到最后，不过超时了class So... 阅读全文

posted @ 2015-02-07 14:38 穆穆兔兔阅读(177) 评论(0) 推荐(0)

[LeetCode] Generate Parentheses

摘要： Givennpairs of parentheses, write a function to generate all combinations of well-formed parentheses.For example, givenn= 3, a solution set is:"((()))... 阅读全文

posted @ 2015-02-07 13:39 穆穆兔兔阅读(162) 评论(0) 推荐(0)

2015年2月6日

[LeetCode] Remove Nth Node From End of List

摘要： Given a linked list, remove thenthnode from the end of list and return its head.For example, Given linked list: 1->2->3->4->5, and n = 2. After re... 阅读全文

posted @ 2015-02-06 14:14 穆穆兔兔阅读(167) 评论(0) 推荐(0)

[LeetCode] Longest Common Prefix

摘要： Write a function to find the longest common prefix string amongst an array of strings.思路：很简单，其他字符串和第一个字符串比较，一个一个字符比较，反正最长不会超过第一个字符串的长度。class Solution... 阅读全文

posted @ 2015-02-06 11:12 穆穆兔兔阅读(140) 评论(0) 推荐(0)

[LeetCode] Letter Combinations of a Phone Number

摘要： Given a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telephon... 阅读全文

posted @ 2015-02-06 10:38 穆穆兔兔阅读(139) 评论(0) 推荐(0)

2015年2月5日

[LeetCode] Roman to Integer

摘要： Given a roman numeral, convert it to an integer.Input is guaranteed to be within the range from 1 to 3999.思路：从各位向前处理，当前字符代表的数比后面一位字符代表的数大（包括等于），就加，小就减... 阅读全文

posted @ 2015-02-05 17:24 穆穆兔兔阅读(147) 评论(0) 推荐(0)

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