determines the reverse of a sequence of nucleotides. - Java Data Structure

Java examples for Data Structure:DNA

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Description

determines the reverse of a sequence of nucleotides.

Demo Code

/*//from   ww w. j  av a  2s . c  o m
 **  DNAUtils
 **  (c) Copyright 1997, Neomorphic Sofware, Inc.
 **  All Rights Reserved
 **
 **  CONFIDENTIAL
 **  DO NOT DISTRIBUTE
 **
 **  File: DNAUtils.java
 **
 */
//package com.java2s;

public class Main {
    /**
     * determines the reverse of a sequence of nucleotides.
     *
     * @param s a string of nucleotide codes.
     * @return the codes in reverse order.
     */
    public static String reverse(String s) {
        if (s == null) {
            return null;
        }
        StringBuffer buf = new StringBuffer(s.length());
        //    int j=0;
        for (int i = s.length() - 1; i >= 0; i--) {
            buf.append(s.charAt(i));
            //      j++;
        }
        return buf.toString();
    }
}

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