Your own hash algorithm for String - Java java.lang

Java examples for java.lang:String Hash

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Description

Your own hash algorithm for String

Demo Code

/*/* w  ww .j  a v a  2 s  . c  o m*/
 *  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.
 *
 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        String u = "java2s.com";
        System.out.println(hash(u));
    }

    public static long hash(String u) {
        long hash = 0;
        for (int i = 0; i < u.length(); i++) {
            final char c = u.charAt(i);
            hash += c * c * c * c * c; // No need for Math.pow when the power is just 5
        }
        return hash;
    }
}

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