本篇内容介绍了“Java怎么生成括号”的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!
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:
[
"((()))",
"(()())",
"(())()",
"()(())",
"()()()"
]
public class Solution {
public List<String> generateParenthesis(int n) {
ArrayList<String> result = new ArrayList<String>();
dfs(result, "", n, n);
return result;
}
/*
left and right represents the remaining number of ( and ) that need to be added.
When left > right, there are more ")" placed than "(". Such cases are wrong and the method stops.
*/
public void dfs(ArrayList<String> result, String s, int left, int right){
if(left > right) //因为从left开始减一,所以left不可能小于right
return;
if(left==0&&right==0){
result.add(s);
return;
}
if(left>0){
dfs(result, s+"(", left-1, right); //
}
if(right>0){
dfs(result, s+")", left, right-1);
}
}
}
“Java怎么生成括号”的内容就介绍到这里了,感谢大家的阅读。如果想了解更多行业相关的知识可以关注亿速云网站,小编将为大家输出更多高质量的实用文章!
亿速云「云服务器」,即开即用、新一代英特尔至强铂金CPU、三副本存储NVMe SSD云盘,价格低至29元/月。点击查看>>
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。
原文链接:https://my.oschina.net/datacube/blog/703513