Create 1630-arithmetic-subarrays.js

Author: everthis

1630-arithmetic-subarrays.js

@@ -0,0 +1,24 @@
+/**
+ * @param {number[]} nums
+ * @param {number[]} l
+ * @param {number[]} r
+ * @return {boolean[]}
+ */
+const checkArithmeticSubarrays = function(nums, l, r) {
+  const len = l.length
+  const res = []
+  for(let i = 0; i < len; i++) {
+    res.push(chk(nums.slice(l[i], r[i] + 1)))
+  }
+  return res
+};
+
+function chk(arr) {
+  if(arr.length === 0 || arr.length === 1 || arr.length === 2) return true
+  arr.sort((a, b) => a - b)
+  const diff = arr[1] - arr[0]
+  for(let i = 2, len = arr.length; i < len; i++) {
+    if(arr[i] - arr[i - 1] !== diff) return false
+  }
+  return true
+}