# Write a Program to Defuse the Bomb

# 1652. Defuse the Bomb

You have a bomb to defuse, and your time is running out! Your informer will provide you with a circular array code of length of n and a key k.

To decrypt the code, you must replace every number. All the numbers are replaced simultaneously.

If k > 0, replace the ith number with the sum of the next k numbers.
If k < 0, replace the ith number with the sum of the previous k numbers. If k == 0, replace the ith number with 0. As code is circular, the next element of code[n-1] is code[0], and the previous element of code[0] is code[n-1].Given the circular array code and an integer key k, return the decrypted code to defuse the bomb!

```### Example 1:
“`
Input: code = [5,7,1,4], k = 3
Output: [12,10,16,13]
Explanation: Each number is replaced by the sum of the next 3 numbers. The decrypted code is [7+1+4, 1+4+5, 4+5+7, 5+7+1]. Notice that the numbers wrap around.
“`
```
```### Example 2:
```
Input: code = [1,2,3,4], k = 0
Output: [0,0,0,0]
Explanation: When k is zero, the numbers are replaced by 0.
```
```
```### Example 3:
```
Input: code = [2,4,9,3], k = -2
Output: [12,5,6,13]
Explanation: The decrypted code is [3+9, 2+3, 4+2, 9+4]. Notice that the numbers wrap around again. If k is negative, the sum is of the previous numbers.
```
```
```Constraints:
```
n == code.length
1 <= n <= 100
1 <= code[i] <= 100
-(n - 1) <= k <= n - 1
```
```
```/**
* @param {number[]} code
* @param {number} k
* @return {number[]}
*/
const decrypt = function(code, k) {
const len = code.length;
const out = new Array(len).fill(0)
const sign = k > 0 ? 1 : -1;
const limit = k > 0 ? len : -1;

for(let i = 0; i < len; i++) {
let count = 0, j = i + sign;
while(k > 0 ? count < k : count > k) {
if (j === limit) {
j = k > 0 ? 0 : len - 1;
}
out[i] += code[j];
count = count + sign;
j = j + sign;
}
}
return out;
};
```