372. Super Pow
Description
Your task is to calculate ab
mod 1337
where a
is a positive integer and b
is an extremely large positive integer given in the form of an array.
Example 1:
Input: a = 2, b = [3] Output: 8
Example 2:
Input: a = 2, b = [1,0] Output: 1024
Example 3:
Input: a = 1, b = [4,3,3,8,5,2] Output: 1
Constraints:
1 <= a <= 231 - 1
1 <= b.length <= 2000
0 <= b[i] <= 9
b
does not contain leading zeros.