Create 1652-defuse-the-bomb.js

Author: everthis

1652-defuse-the-bomb.js

@@ -0,0 +1,22 @@
+/**
+ * @param {number[]} code
+ * @param {number} k
+ * @return {number[]}
+ */
+const decrypt = function(code, k) {
+  const res = new Array(code.length).fill(0);
+  if (k === 0) return res;
+  let start = 1, end = k, sum = 0;
+  if (k < 0) {
+    k = -k;
+    start = code.length - k;
+    end = code.length - 1;
+  }
+  for (let i = start; i <= end; i++) sum += code[i];
+  for (let i = 0; i < code.length; i++) {
+    res[i] = sum;
+    sum -= code[(start++) % code.length];
+    sum += code[(++end) % code.length];
+  }
+  return res;
+};