Create 1636-sort-array-by-increasing-frequency.js

Author: everthis

1636-sort-array-by-increasing-frequency.js

@@ -0,0 +1,13 @@
+/**
+ * @param {number[]} nums
+ * @return {number[]}
+ */
+const frequencySort = function(nums) {
+  const hash = {}
+  for(let e of nums) {
+    if(hash[e] == null) hash[e] = 0
+    hash[e]++
+  }
+  nums.sort((a, b) => hash[a] === hash[b] ? b - a : hash[a] - hash[b])
+  return nums
+};