From 4a5bf39f8e196efd9772d3708217dd5554d14a1d Mon Sep 17 00:00:00 2001
From: Taranjeet Singh Kalsi <taranjeetkalsi15@gmail.com>
Date: Tue, 8 Oct 2024 00:18:02 +0530
Subject: [PATCH] Add another method to check valid parentheses in
 ValidParentheses.java (#5616)

---
 .../strings/ValidParentheses.java              | 18 ++++++++++++++++++
 .../strings/ValidParenthesesTest.java          |  3 +++
 2 files changed, 21 insertions(+)

diff --git a/src/main/java/com/thealgorithms/strings/ValidParentheses.java b/src/main/java/com/thealgorithms/strings/ValidParentheses.java
index f4f3761b0..629fee495 100644
--- a/src/main/java/com/thealgorithms/strings/ValidParentheses.java
+++ b/src/main/java/com/thealgorithms/strings/ValidParentheses.java
@@ -38,4 +38,22 @@ public final class ValidParentheses {
         }
         return head == 0;
     }
+    public static boolean isValidParentheses(String s) {
+        int i = -1;
+        char[] stack = new char[s.length()];
+        String openBrackets = "({[";
+        String closeBrackets = ")}]";
+        for (char ch : s.toCharArray()) {
+            if (openBrackets.indexOf(ch) != -1) {
+                stack[++i] = ch;
+            } else {
+                if (i >= 0 && openBrackets.indexOf(stack[i]) == closeBrackets.indexOf(ch)) {
+                    i--;
+                } else {
+                    return false;
+                }
+            }
+        }
+        return i == -1;
+    }
 }
diff --git a/src/test/java/com/thealgorithms/strings/ValidParenthesesTest.java b/src/test/java/com/thealgorithms/strings/ValidParenthesesTest.java
index 22deb4b14..2b6884c91 100644
--- a/src/test/java/com/thealgorithms/strings/ValidParenthesesTest.java
+++ b/src/test/java/com/thealgorithms/strings/ValidParenthesesTest.java
@@ -10,15 +10,18 @@ public class ValidParenthesesTest {
     @Test
     void testOne() {
         assertTrue(ValidParentheses.isValid("()"));
+        assertTrue(ValidParentheses.isValidParentheses("()"));
     }
 
     @Test
     void testTwo() {
         assertTrue(ValidParentheses.isValid("()[]{}"));
+        assertTrue(ValidParentheses.isValidParentheses("()[]{}"));
     }
 
     @Test
     void testThree() {
         assertFalse(ValidParentheses.isValid("(]"));
+        assertFalse(ValidParentheses.isValidParentheses("(]"));
     }
 }