22 lines
681 B
Java
22 lines
681 B
Java
package Maths;
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public class PowRecursion {
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public static void main(String[] args) {
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assert Double.compare(pow(2, 0), Math.pow(2, 0)) == 0;
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assert Double.compare(pow(0, 2), Math.pow(0, 2)) == 0;
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assert Double.compare(pow(2, 10), Math.pow(2, 10)) == 0;
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assert Double.compare(pow(10, 2), Math.pow(10, 2)) == 0;
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}
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/**
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* Returns the value of the first argument raised to the power of the
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* second argument
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*
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* @param a the base.
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* @param b the exponent.
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* @return the value {@code a}<sup>{@code b}</sup>.
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*/
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public static long pow(int a, int b) {
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return b == 0 ? 1 : a * pow(a, b - 1);
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}
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} |