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Copy pathValidParanthesis.java
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36 lines (30 loc) · 1000 Bytes
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package Stack;
import java.util.Stack;
public class ValidParanthesis {
public static boolean isValid(String s) {
Stack<Character> stack = new Stack<>();
for (int i = 0; i < s.length(); i++) {
char currentChar = s.charAt(i);
if (currentChar == '('
|| currentChar == '['
|| currentChar == '{') {
stack.push(currentChar);
} else if (stack.isEmpty()) {
return false;
} else {
Character top = stack.peek();
if ((top == '[' && currentChar == ']')
|| (top == '{' && currentChar == '}')
|| (top == '(' && currentChar == ')')) {
stack.pop();
} else {
return false;
}
}
}
return stack.isEmpty();
}
public static void main(String[] args) {
System.out.println(isValid("({})"));
}
}