From 611441079ef0509637fde57646cc65225b20eb70 Mon Sep 17 00:00:00 2001
From: rick-ssa <rick_ssa@hotmail.com>
Date: Mon, 18 Oct 2021 14:15:21 -0300
Subject: [PATCH] created version in js

---
 .../20 - validparenthesis/valid-parenthesis.js | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 leetcode/20 - validparenthesis/valid-parenthesis.js

diff --git a/leetcode/20 - validparenthesis/valid-parenthesis.js b/leetcode/20 - validparenthesis/valid-parenthesis.js
new file mode 100644
index 0000000..b3bec48
--- /dev/null
+++ b/leetcode/20 - validparenthesis/valid-parenthesis.js	
@@ -0,0 +1,18 @@
+const isValid = (s) => {
+    //cria uma expressão regular para substituir todos os () {} [] por branco
+    const pattern = /\(\)|{}|\[\]/g
+    let result = s.replace(pattern,(x)=>x='')
+
+    // efetua a ação até não haver mais correspondência
+    while (pattern.test(result)) {
+        result = result.replace(pattern,(x)=>x='')
+    }
+
+    // verdadeiro se o resultado estiver vazio caso contrário é falso
+    return result === ''
+}
+
+//testes 
+console.log(isValid('(){[]}(){]}')) // false
+console.log(isValid("()[]{}")) // true
+console.log(isValid("([])]"))   // false
\ No newline at end of file