Create 1190. Reverse Substrings Between Each Pair of Parentheses (#526)

Author: Chayandas07

1190. Reverse Substrings Between Each Pair of Parentheses

@@ -0,0 +1,31 @@
+class Solution {
+public:
+    void reverseString(string &s, int i, int j)
+    {
+        while(i < j)
+        {
+            if(s[i] == '(') i++;
+            if(s[j] == ')') j--;
+            swap(s[i++], s[j--]);
+        }
+    }
+    string reverseParentheses(string s) 
+    {
+        stack<int>st;
+        int n = s.size();
+        for(int i = 0; i < n; i++)
+        {
+            if(s[i] == '(') st.push(i);
+            if(s[i] == ')')
+            {
+                reverseString(s, st.top(), i);
+                st.pop();
+            }
+        }
+
+        string ans;
+        for(auto ch:s)
+            if(isalpha(ch)) ans += ch;
+        return ans;
+    }
+};