Java/Maths/PowRecursion.java at master · primary-code-test/Java · GitHub

Repository navigation

package Maths;

public class PowRecursion {

public static void main(String[] args) {

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

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

assert Double.compare(pow(2, 10), Math.pow(2, 10)) == 0;

assert Double.compare(pow(10, 2), Math.pow(10, 2)) == 0;

}

/**

* 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) {

return b == 0 ? 1 : a * pow(a, b - 1);

}