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Given two numbers **A** and **B**, find K^{th} digit from right of A^{B}.

**Example 1:**

**Input:**
A = 3
B = 3
K = 1
**Output:**
7
**Explanation:**
3^{3 }= 27 and 1st
digit from right is
7

**Example 2:**

**Input:**
A = 5
B = 2
K = 2
**Output:**
2
**Explanation:**
5^{2 }= 25 and second
digit from right is
2.

**Your Task:**

You don't need to read input or print anything. Your task is to complete the function **kthDigit()** which takes integers **A, B, K** as input parameters and returns K^{th }Digit of A^{B} from right side.

**Expected Time Complexity:** O(log A^{B})

**Expected Space Complexity:** O(1)

**Constraints:**

1 <= A,B <= 15

1 <=K<= digits in A^{B}

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