StoneHarbor LeetCode Generate Parentheses Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, givenn= 3, a solution set is: [ "((()))", "(()())", "(())()", "()(())", "()()()" ] 很明显这是一道permutation 题...
Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, given n = 3,
classSolution{ public: vector<string>generateParenthesis(intn) { //本质是一个栈不同序列 1/n *C(n~ 2n) stringstr; vector<string>result; //先来一个全排序 然后在LeetCode 20题基础上去掉不符合条件的 ok for(inti=0;i<n;i++) str=str+"()"; sort(str.begin(),str.end()); // for(i...
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My Solutions to Leetcode problems. All solutions support C++ language, some support Java and Python. Multiple solutions will be given by most problems. Enjoy:) 我的Leetcode解答。所有的问题都支持C++语言,一部分问题支持Java语言。近乎所有问题都会提供多个算
Givennpairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, givenn= 3, a solution set is: "((()))", "(()())", "(())()", "()(())", "()()()" 这道题其实是关于卡特兰数的,如果只是要输出结果有多少组,那么直接用卡特兰数的...
用left和right代表左括号和右括号的剩余数,初始值为n,利用回溯的思想解题,当出现left的值大于right的值时,说明串中的右括号多于左括号,()),这种直接错误返回,如果出现left和right都为零则是满足情况的一个串。 代码: publicclassSolution{publicList<String>generateParenthesis(intn){ ...
Givennpairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, givenn= 3, a solution set is: "((()))", "(()())", "(())()", "()(())", "()()() Solution 1 Two conditions to check: ...