Java/Maths/PowRecursion.java at master · java66liu/Java · GitHub

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package Maths;

public class PowRecursion {

public static void main(String[] args) {

assert pow(2, 0) == Math.pow(2, 0);

assert pow(0, 2) == Math.pow(0, 2);

assert pow(2, 10) == Math.pow(2, 10);

assert pow(10, 2) == Math.pow(10, 2);

}

/**

* Returns the value of the first argument raised to the power of the

* second argument

* @param a the base.

* @param b the exponent.

* @return the value {@code a}<sup>{@code b}</sup>.

public static long pow(int a, int b) {

if (b == 0) {

return 1;

} else {

return a * pow(a, b - 1);

}

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