Create 1007. Minimum Domino Rotations For Equal Row (#785)

Author: Chayandas07

1007. Minimum Domino Rotations For Equal Row

@@ -0,0 +1,17 @@
+class Solution {
+public:
+    int minDominoRotations(vector<int>& tops, vector<int>& bottoms) {
+        int n = tops.size();
+        vector<int> top(7, 0), btm(7, 0), same(7, 0);
+        for (int i = 0; i < n; i++) {
+            top[tops[i]]++;
+            btm[bottoms[i]]++;
+            if (tops[i] == bottoms[i])
+                same[tops[i]]++;
+        }
+        for (int num = 1; num <= 6; num++)
+            if (top[num] + btm[num] - same[num] == n)
+                return min(n - top[num], n - btm[num]);
+        return -1;
+    }
+};