Create 3375. Minimum Operations to Make Array Values Equal to K (#762)

Author: Chayandas07

3375. Minimum Operations to Make Array Values Equal to K

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+class Solution {
+public:
+    int minOperations(vector<int>& nums, int k) {
+        unordered_map<int, int> hash;
+        int res = 0;
+        for(int i=0; i<nums.size(); i++) {
+            if(nums[i] < k) return -1;
+            if(!hash[nums[i]] && nums[i] != k) {
+                hash[nums[i]] = 1;
+                res++;
+            }
+        }
+        return res;
+    }
+};