✨ smallest range ii

Author: tangweikun

src/910-smallest-range-ii/index.js

@@ -0,0 +1,19 @@
+/**
+ * @param {number[]} A
+ * @param {number} K
+ * @return {number}
+ */
+var smallestRangeII = function (A, K) {
+  A.sort((x, y) => x - y);
+  const len = A.length;
+  let res = A[len - 1] - A[0];
+
+  for (let i = 0; i < len - 1; i++) {
+    const max = Math.max(A[i] + K, A[len - 1] - K);
+    const min = Math.min(A[0] + K, A[i + 1] - K);
+    const diff = max - min;
+    res = Math.min(res, diff);
+  }
+
+  return res;
+};