Create 1742-maximum-number-of-balls-in-a-box.js

Author: everthis

1742-maximum-number-of-balls-in-a-box.js

@@ -0,0 +1,16 @@
+/**
+ * @param {number} lowLimit
+ * @param {number} highLimit
+ * @return {number}
+ */
+const countBalls = function(lowLimit, highLimit) {
+  const m = {}
+  for(let i = lowLimit; i <= highLimit; i++) {
+    const tmp = (i + '').split('').map(e => +e).reduce((ac, e) => ac + e, 0)
+    if(m[tmp] == null) m[tmp] = 0
+    m[tmp]++
+  }
+  const arr = Object.values(m)
+  arr.sort((a, b) => b - a)
+  return arr[0]
+};