mrpod2g

2015年2月3日

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./** * Def... 阅读全文

posted @ 2015-02-03 16:06 mrpod2g 阅读(107) 评论(0) 推荐(0) 编辑

Length of Last Word

摘要： Given a stringsconsists of upper/lower-case alphabets and empty space characters' ', return the length of last word in the string.If the last word doe... 阅读全文

posted @ 2015-02-03 13:13 mrpod2g 阅读(99) 评论(0) 推荐(0) 编辑

2015年2月2日

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 @ 2015-02-02 23:08 mrpod2g 阅读(107) 评论(0) 推荐(0) 编辑

Valid Sudoku

摘要： Determine if a Sudoku is valid, according to:Sudoku Puzzles - The Rules.The Sudoku board could be partially filled, where empty cells are filled with ... 阅读全文

posted @ 2015-02-02 16:20 mrpod2g 阅读(122) 评论(0) 推荐(0) 编辑

Implement strStr()

摘要： Implement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.字符串匹配问题，要注意needle 为空的情况，最简... 阅读全文

posted @ 2015-02-02 11:23 mrpod2g 阅读(92) 评论(0) 推荐(0) 编辑

2015年2月1日

Reverse Words in a String

摘要： Given an input string, reverse the string word by word.For example,Given s = "the sky is blue",return "blue is sky the".public class Solution { pub... 阅读全文

posted @ 2015-02-01 15:15 mrpod2g 阅读(90) 评论(0) 推荐(0) 编辑

Evaluate Reverse Polish Notation

摘要： Evaluate the value of an arithmetic expression inReverse Polish Notation.Valid operators are+,-,*,/. Each operand may be an integer or another express... 阅读全文

posted @ 2015-02-01 15:12 mrpod2g 阅读(118) 评论(0) 推荐(0) 编辑

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 @ 2015-02-01 15:04 mrpod2g 阅读(92) 评论(0) 推荐(0) 编辑

Remove Duplicates from Sorted Array

摘要： Given a sorted array, remove the duplicates in place such that each element appear onlyonceand return the new length.Do not allocate extra space for a... 阅读全文

posted @ 2015-02-01 14:46 mrpod2g 阅读(65) 评论(0) 推荐(0) 编辑

Valid Parentheses

摘要： Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must close in the correct ... 阅读全文

posted @ 2015-02-01 13:08 mrpod2g 阅读(121) 评论(0) 推荐(0) 编辑

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