Update 974.Subarray-Sums-Divisible-by-K.cpp

wisdompeak · web-flow · commit aee3196a8d4d · 2021-07-01T22:31:05.000-07:00
diff --git a/Hash/974.Subarray-Sums-Divisible-by-K/974.Subarray-Sums-Divisible-by-K.cpp b/Hash/974.Subarray-Sums-Divisible-by-K/974.Subarray-Sums-Divisible-by-K.cpp
@@ -5,15 +5,15 @@ class Solution {
         unordered_map<int,int>Map;
 
         Map[0] = 1;
-        int sum = 0;
-        int count = 0;
+        int presum = 0;
+        int ret = 0;
         for (int i=0; i<A.size(); i++)
         {
-            sum+=A[i];
-            int r = sum > 0 ? sum%K : (sum%K+K)%K;
-            count+=Map[r];
+            presum += A[i];
+            int r = presum > 0 ? presum%K : (presum%K+K)%K;
+            ret += Map[r];
             Map[r]++;
         }
-        return count;
+        return ret;
     }
 };
