diff --git a/945. Minimum Increment to Make Array Unique b/945. Minimum Increment to Make Array Unique
new file mode 100644
index 0000000..62e2124
--- /dev/null
+++ b/945. Minimum Increment to Make Array Unique	
@@ -0,0 +1,19 @@
+class Solution {
+public:
+    int minIncrementForUnique(std::vector<int>& nums) {
+        if (nums.empty()) return 0;
+        int moves = 0,maxVal = 0;
+        for(auto c:nums)maxVal=max(maxVal,c);
+        int maxLength = nums.size() + maxVal;
+        vector<int> count(maxLength, 0);
+        for (int c : nums) count[c]++;
+        for (int i = 0; i < maxLength; ++i) {
+            if (count[i] > 1) {
+                int tmp = count[i] - 1;
+                count[i + 1] += tmp;
+                moves += tmp;
+            }
+        }
+        return moves;
+    }
+};