Create 1551-minimum-operations-to-make-array-equal.js

Author: everthis

1551-minimum-operations-to-make-array-equal.js

@@ -0,0 +1,22 @@
+/**
+ * @param {number} n
+ * @return {number}
+ */
+var minOperations = function(n) {
+  let l = 1, r = 2 * (n - 1) + 1
+  
+  // [1, 3]
+  // [1, 3, 5, 7]
+  
+  // [1]
+  // [1, 3, 5]
+  // [1, 3, 5, 7, 9]
+  const target = l + (r - l) / 2
+  let res = 0
+  const num = ~~((n + 1) / 2)
+  for(let i = 1; i <= num; i++) {
+    res += target - (2 * (i -1) + 1)
+  }
+  
+  return res
+};