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Generate Parentheses -- leetcode
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: "((()))", "(()())", "(())()", "()(())", "()()()" ...
分类:其他好文   时间:2014-12-25 20:40:36    阅读次数:143
Valid Parentheses -- leetcode
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 b...
分类:其他好文   时间:2014-12-25 16:25:57    阅读次数:123
LeetCode--Valid Parentheses
这个题目我采用了两种方案,第一种方案代码行数相对较少,但效率稍低,第二种方案参照网上的进行改进代码行数相对多些,但效率稍高。 题目: Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brack...
分类:其他好文   时间:2014-12-21 20:43:27    阅读次数:202
【LeetCode】Generate Parentheses (2 solutions)
Generate ParenthesesGivennpairs of parentheses, write a function to generate all combinations of well-formed parentheses.For example, givenn= 3, a sol...
分类:其他好文   时间:2014-12-20 11:35:05    阅读次数:136
UVA - 673 - Parentheses Balance (栈的应用!)
UVA - 673 Parentheses Balance Time Limit: 3000MS   Memory Limit: Unknown   64bit IO Format: %lld & %llu Submit Status Description   Parentheses Balance...
分类:其他好文   时间:2014-12-18 20:48:22    阅读次数:283
【LeetCode】Longest Valid Parentheses
Longest Valid ParenthesesGiven a string containing just the characters'('and')', find the length of the longest valid (well-formed) parentheses substr...
分类:其他好文   时间:2014-12-18 11:48:19    阅读次数:158
【leetcode】 Longest Valid Parentheses (hard)★
Given a string containing just the characters'('and')', find the length of the longest valid (well-formed) parentheses substring.For"(()", the longest...
分类:其他好文   时间:2014-12-17 17:55:07    阅读次数:160
careercup-递归和动态规划 9.6
9.6 实现一种算法,打印n对括号的全部有效组合(即左右括号正确配对)。类似leetcode:Generate Parentheses解法:从头开始构造字符串,从而避免出现重复字符串。在这个解法中,逐一加入左括号和右括号,只有字符串仍然有效。每次递归调用,都会有个索引指向字符串的某个字符。我们需要选...
分类:其他好文   时间:2014-12-08 09:15:06    阅读次数:156
Leetcode: Generate Parentheses
Givennpairs of parentheses, write a function to generate all combinations of well-formed parentheses.For example, givenn= 3, a solution set is:"((()))...
分类:其他好文   时间:2014-12-05 22:39:10    阅读次数:142
Leetcode: Longest Valid Parentheses
Given a string containing just the characters'('and')', find the length of the longest valid (well-formed) parentheses substring.For"(()", the longest...
分类:其他好文   时间:2014-12-04 21:12:36    阅读次数:269
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