Phoebe815

2014年10月21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 @ 2014-10-21 02:06 Phoebe815 阅读(150) 评论(0) 推荐(0)

[Leetcode] Merge Two Sorted Lists

摘要： Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists.Solution:... 阅读全文

posted @ 2014-10-21 01:43 Phoebe815 阅读(129) 评论(0) 推荐(0)

[Leetcode] Remove Duplicates from Sorted List

摘要： Given a sorted linked list, delete all duplicates such that each element appear onlyonce.For example,Given1->1->2, return1->2.Given1->1->2->3->3, retu... 阅读全文

posted @ 2014-10-21 01:32 Phoebe815 阅读(117) 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 @ 2014-10-21 01:13 Phoebe815 阅读(102) 评论(0) 推荐(0)

2014年10月19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.Solution：此题是要求把罗马数字转换成数字。首先，学习一下罗马数字，参考罗马数字罗... 阅读全文

posted @ 2014-10-19 12:34 Phoebe815 阅读(155) 评论(0) 推荐(0)

[Leetcode] Search Insert Position

摘要： Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in or... 阅读全文

posted @ 2014-10-19 06:22 Phoebe815 阅读(118) 评论(0) 推荐(0)

[Leetcode] String to Integer (atoi)

摘要： Implementatoito convert a string to an integer.Hint:Carefully consider all possible input cases. If you want a challenge, please do not see below and ... 阅读全文

posted @ 2014-10-19 06:16 Phoebe815 阅读(134) 评论(0) 推荐(0)

[Leetcode] Count and Say

摘要： The count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ...1is read off as"one 1"or11.11is read off as"tw... 阅读全文

posted @ 2014-10-19 05:45 Phoebe815 阅读(167) 评论(0) 推荐(0)

[Leetcode] Valid Palindrome

摘要： Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: Pana... 阅读全文

posted @ 2014-10-19 03:46 Phoebe815 阅读(119) 评论(0) 推荐(0)

2014年10月18日

[Leetcode] Implement strStr()

摘要： Implement strStr().Returns a pointer to the first occurrence of needle in haystack, ornullif needle is not part of haystack.Solution: 1 public class S... 阅读全文

posted @ 2014-10-18 07:32 Phoebe815 阅读(123) 评论(0) 推荐(0)

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