Update 1224-maximum-equal-frequency.js

Author: everthis

1224-maximum-equal-frequency.js

@@ -1,3 +1,41 @@
+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+const maxEqualFreq = function (nums) {
+  const freqCnt = {}, cnt = {}, { max } = Math
+
+  let res = 0, maxF = 0, i = 0
+  for(const e of nums) {
+    if(cnt[e] == null) cnt[e] = 0
+    cnt[e]++
+
+    const f = cnt[e]
+
+    if(freqCnt[f - 1] == null) freqCnt[f - 1] = 0
+    if(freqCnt[f] == null) freqCnt[f] = 0
+    
+    if(freqCnt[f - 1] > 0) freqCnt[f - 1]--
+    freqCnt[f]++
+
+    maxF = max(maxF, f)
+
+    if(
+      maxF === 1 ||
+      maxF * freqCnt[maxF] === i ||
+      (maxF - 1) * (freqCnt[maxF - 1] + 1) === i
+    ) {
+      res = i + 1
+    }
+
+    i++
+  }
+
+  return res
+}
+
+// another
+
 /**
  * @param {number[]} nums
  * @return {number}