Create 2404-most-frequent-even-element.js

Author: everthis

2404-most-frequent-even-element.js

@@ -0,0 +1,24 @@
+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+var mostFrequentEven = function(nums) {
+  const hash = {}
+  for(const e of nums) {
+    if(e % 2 === 0) {
+      if(hash[e] == null) hash[e] = 0
+      hash[e]++
+    }
+  }
+  const entries = Object.entries(hash)
+  if(entries.length === 0) return -1
+  entries.sort((a, b) => b[1] - a[1])
+  const v = entries[0][1]
+  const keys = Object.keys(hash).map(e => +e).sort((a, b) => a - b)
+// console.log(hash)
+  for(const k of keys) {
+    if(hash[k] === v) return k
+  }
+  
+  return -1
+};