solved medium day 8

medium/day_8/solution.cpp

@@ -1 +1,46 @@
-//Write your code here
+//Write your code here
+#include <bits/stdc++.h>
+using namespace std;
+int getlength(string str, int idx1, int idx2)//this function returns the length of repeating sequence of string
+{
+    int count = 0;//count shows how many continuous characters are repeating
+    while (idx1 < idx2 && idx2 < str.length())
+    {
+        if (str[idx1] == str[idx2])
+        {
+            idx1++;
+            idx2++;
+            count++;
+        }
+        else
+            break;
+    }
+    return count;
+}
+int main()
+{
+    string str;
+    cin >> str; // input the string
+    int i = 0;
+    int maxLen = INT_MIN, len = 1;
+    bool flag = false; //flag shows if any character is repeating
+    while (i < str.length())//iterating over the string
+    {
+        if (str.find(str[i], i + 1) != string::npos) // if string find any repeating characters
+        {
+            flag = true;    //character repeats so put flag to true
+            len = getlength(str, i, str.find(str[i], i + 1));//now get the length of repeating sequence
+            if (len > maxLen)
+            {
+                maxLen = len;//if length of current repeating sequence is greater than len of 
+                             //maximum repeating sequence till now, then update maxlen
+            }
+        }
+        i++;
+    }
+    if (flag)//if flag is true means there is atleast one repeating sequence
+        cout <<  maxLen << endl;
+    else
+        cout << -1 << endl;
+    return 0;
+}