Added 1807C - Find and Replace.cpp

Author: vikashpatel24

1807C - Find and Replace.cpp

@@ -0,0 +1,67 @@
+//                                 ॐ नमः शिवाय
+#include<bits/stdc++.h>
+using namespace std;
+ 
+// Code Written By: Vikash Patel
+// Codeforces Profile: https://codeforces.com/profile/vikashpatel
+
+bool visited(vector<pair<char,char>> ans , char ch) 
+{
+    for(auto i : ans)
+    {
+        if(i.first == ch)
+        return true;
+    }
+    return false;
+}
+
+bool checkPos(vector<pair<char,char>> ans , char ch, char c)
+{
+    for(auto i : ans)
+    {
+        if(i.first==ch && i.second==c)
+        return true;
+    }
+    return false;
+}
+
+int main()
+{
+    int t;
+    cin>>t;
+    while(t--)
+    {
+        int n;
+        cin>>n;
+        string s;
+        cin>>s;
+        vector<pair<char,char>> ans;
+        bool sol = true;
+        for(int i=0;i<n;i++)
+        {
+            char c;
+                if(i%2==0)
+                c = 'o';
+                else
+                c = 'e';
+            if(!visited(ans,s[i]))
+            {
+                ans.push_back(make_pair(s[i],c));
+            }
+            if(checkPos(ans,s[i],c))
+            {
+                continue;
+            }
+            else
+            {
+                sol = false;
+                break;
+            }
+        }
+        if(sol)
+        cout<<"YES"<<endl;
+        else
+        cout<<"NO"<<endl;
+    }
+    return 0;
+}