Create 2104-sum-of-subarray-ranges.js

Author: everthis

2104-sum-of-subarray-ranges.js

@@ -0,0 +1,18 @@
+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+const subArrayRanges = function(nums) {
+  const n = nums.length, { max, min } = Math
+  let res = 0
+  
+  for(let i = 0; i < n; i++) {
+    let [most, least] = [-Infinity, Infinity]
+    for(let j = i; j < n; j++) {
+      most = max(most, nums[j])
+      least = min(least, nums[j])
+      res += most - least     
+    }
+  }
+  return res
+};