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CC9.6 (LeetCode-Generate Parentheses ) Implement analgorithm to print all valid combinations of n-pairs of parenthese.
Implement analgorithm to print all valid combinations of n-pairs of parenthese.Analysis:-只要待加入的有左括号就可以加入左括号。最初可以加入的左括号为n个。-只要已加入的左括号比右括号多就可以加入右括号。最初可以...
分类:其他好文   时间:2015-04-03 14:46:24    阅读次数:115
Leetcode22. 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:2015-04-03 12:51:34    阅读次数:116
Leetcode32. 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:2015-04-03 11:10:45    阅读次数:102
LeetCode - Valid Parentheses
题目意思非常简单,判断所给字符串中的括号是否匹配,需要注意的问题:)(这样是不匹配的。 public class Solution { public boolean isValid(String s) { Stack stack = new Stack(); ...
分类:其他好文   时间:2015-04-02 22:07:35    阅读次数:146
2015.04.01 Leetcode 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: "((()))", "(()())", "(())()", "()(())", "()()()" 题解: 需要用dfs -backtracking. 给定的n为括号对,也就是有n个...
分类:其他好文   时间:2015-04-02 13:30:32    阅读次数:158
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 valid parentheses substring is "()", ...
分类:其他好文   时间:2015-04-02 11:40:03    阅读次数:114
No.22 Generate Parentheses
No.22 Generate ParenthesesGivennpairs of parentheses, write a function to generate all combinations of well-formed parentheses.For example, givenn= 3,...
分类:其他好文   时间:2015-04-01 17:21:55    阅读次数:97
Generate Parentheses
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:2015-04-01 11:25:47    阅读次数:110
Valid Parentheses
有一个由各种括号组成的字符串,判断其是否合法 合法准则即是否成对匹配(())合法({])不合法())(不合法思路:用栈模拟即可 class Solution {public: bool isValid(string s) { stack stk; for (size_t i = 0; i < s.s...
分类:其他好文   时间:2015-04-01 11:00:27    阅读次数:82
[LeetCode 46 & 47] Permutations I & II
题目链接:permutations 相似题型: 1.  [LeetCode 39&40] Combination Sum I & II 2. [LeetCode 78] Subsets 3.  [LeetCode 90] Subsets II 4. [LeetCode 22] Generate Parentheses 5.  [LeetCod...
分类:其他好文   时间:2015-03-30 09:39:01    阅读次数:165
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