Create 1608-special-array-with-x-elements-greater-than-or-equal-x.js

Author: everthis

1608-special-array-with-x-elements-greater-than-or-equal-x.js

@@ -0,0 +1,13 @@
+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+const specialArray = function (nums) {
+    nums.sort((a, b) => b - a)
+    let i = 0
+    while(i < nums.length && nums[i] >= i) {
+      i++
+    }
+    if(nums[i - 1] < i) return -1
+    return i
+};