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Reversing the first B elements of queue

Given an array of integers A and an integer B.
we need to reverse the order of the first B elements of the array,
leaving the other elements in the same relative order.

Note: You are required to first insert elements into an auxiliary queue then perform Reversal of first B elements.

Input Format

The argument given is the integer array A and an integer B.

Output Format

Return an array of integer after reversing the first k elements of A using queue.


1 <= B <= length of the array <= 200000
1 <= A[i] <= 100000

For Example

Input 1:
    A = [1, 2, 3, 4, 5]
    B = 3
Output 1:
    [3, 2, 1, 4, 5]

Input 2:
    A = [5, 17, 100, 11]
    B = 2
Output 2:
    [17, 5, 100, 11]
NOTE: You only need to implement the given function. Do not read input, instead use the arguments to the function. Do not print the output, instead return values as specified. Still have a doubt? Checkout Sample Codes for more details.
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