Java Factorial factorial(int n)

Description

int wrapper for #factorial(float)

License

Apache License

Declaration

public static int factorial(int n) 

Method Source Code

//package com.java2s;
/** Copyright 2014 Robin Stumm (serverkorken@gmail.com, http://dermetfan.net)
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License. */

public class Main {
    /** int wrapper for {@link #factorial(float)}
     *  @see #factorial(float) */
    public static int factorial(int n) {
        return (int) factorial((float) n);
    }/*from www  . java2s.  c o m*/

    /** @param n the number to find the factorial for
     *  @return the factorial of the given number */
    public static float factorial(float n) {
        if (n < 0)
            throw new IllegalArgumentException("n must be >= 0: " + n);
        return n <= 1 ? 1 : n * factorial(n - 1);
    }
}

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