Problem 2396. last n digit of a power function

Example 1:
base = 3; expo = 8; n = 3;
3^8 = 6561
return the last 3 digit number 561.

Example 2:
base = 3; expo = 10; n = 3;
3^10 = 59049
return the last 3 digit number 49.

Solution Comments

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