Update index.kt

Author: masx200

count-ways-to-build-good-string/index.kt

@@ -1,6 +1,6 @@
 package com.github.masx200.leetcode_test.count_ways_to_build_good_string
 
-const val mod = 1e9 + 7;
+const val mod = (1e9 + 7).toInt();
 
 class Solution {
     fun countGoodStrings(low: Int, high: Int, zero: Int, one: Int): Int {
@@ -10,8 +10,8 @@ class Solution {
         for (i in 1..high) {
             if (i >= zero) dp[i] += dp[i - zero];
             if (i >= one) dp[i] += dp[i - one];
-            dp[i] = (dp[i] % mod).toInt();
-            if (i >= low) ans = ((ans + dp[i]) % mod).toInt();
+            dp[i] = (dp[i] % mod);
+            if (i >= low) ans = ((ans + dp[i]) % mod);
         }
         return ans;
     }