/Java/Valid parentheses leetcode solution java

Valid parentheses leetcode solution java

HashMap<Character, Character> map = new HashMap<Character, Character>();
	map.put('(', ')');
	map.put('[', ']');
	map.put('{', '}');
 
	Stack<Character> stack = new Stack<Character>();
 
	for (int i = 0; i < s.length(); i++) {
		char curr = s.charAt(i);
 
		if (map.keySet().contains(curr)) {
			stack.push(curr);
		} else if (map.values().contains(curr)) {
			if (!stack.empty() && map.get(stack.peek()) == curr) {
				stack.pop();
			} else {
				return false;
			}
		}
	}
 
	return stack.empty();

Similar codes

0 vote88 views1 answer
Ubuntu java compiler version
Java
8 votes94 views1 answer
Java how to find length of int
Java
18 votes105 views2 answers
Java android show toast
Java
0 vote110 views1 answer
Error: Could not find or load main class mcp.client.Start Caused by: java.lang.ClassNotFoundException: mcp.client.Start
Java
0 vote95 views1 answer
WriteToFileAsync java
Java
0 vote106 views1 answer
How to convert character into operator
Java
0 vote104 views1 answer
Java new.JFrame();
Java
11 votes106 views1 answer
Java age from date
Java
0 vote108 views2 answers
Registry
Java
0 vote98 views3 answers
Tostring in java
Java