Create Solution.java

Author: Jerring

solution/1021.Remove Outermost Parentheses/Solution.java

@@ -0,0 +1,18 @@
+class Solution {
+    public String removeOuterParentheses(String S) {
+        StringBuilder res = new StringBuilder();
+        int cnt = 0;
+        for (char c : S.toCharArray()) {
+            if (c == '(') {
+                if (++cnt > 1) {
+                    res.append('(');
+                }
+            } else {
+                if (--cnt > 0) {
+                    res.append(')');
+                }
+            }
+        }
+        return res.toString();
+    }
+}