Java ArrayList to String toString(ArrayList a, String delim)

Description

to String

License

Apache License

Declaration

public static String toString(ArrayList a, String delim) 

Method Source Code

//package com.java2s;
/* /*  ww  w  . ja v a2  s.  c  o m*/
 * Copyright 2016 Lutz Fischer <l.fischer@ed.ac.uk>.
 *
 * 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.
 */

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;

public class Main {
    public static String toString(Collection c, String delim) {
        if (c.isEmpty())
            return "";
        StringBuilder sb = new StringBuilder();
        for (Object o : c) {
            sb.append(delim);
            sb.append(o.toString());
        }
        return sb.substring(delim.length());
    }

    public static String toString(int[] a, String delim) {
        if (a.length == 0)
            return "";
        StringBuilder sb = new StringBuilder(Integer.toString(a[0]));
        for (int i = 1; i < a.length; i++) {
            sb.append(delim);
            sb.append(Integer.toString(a[i]));
        }
        return sb.toString();
    }

    public static String toString(double[] a, String delim) {
        if (a.length == 0)
            return "";
        StringBuilder sb = new StringBuilder(Double.toString(a[0]));
        for (int i = 1; i < a.length; i++) {
            sb.append(delim);
            sb.append(Double.toString(a[i]));
        }
        return sb.toString();
    }

    public static String toString(long[] a, String delim) {
        if (a.length == 0)
            return "";
        StringBuilder sb = new StringBuilder(Long.toString(a[0]));
        for (int i = 1; i < a.length; i++) {
            sb.append(delim);
            sb.append(Long.toString(a[i]));
        }
        return sb.toString();
    }

    public static <T> String toString(T[] a, String delim) {
        if (a.length == 0)
            return "";
        StringBuilder sb = new StringBuilder(a[0].toString());
        for (int i = 1; i < a.length; i++) {
            sb.append(delim);
            sb.append(a[i].toString());
        }
        return sb.toString();
    }

    public static String toString(ArrayList a, String delim) {
        if (a.isEmpty())
            return "";
        StringBuilder sb = new StringBuilder(a.get(0).toString());
        for (int i = 1; i < a.size(); i++) {
            sb.append(delim);
            sb.append(a.get(i).toString());
        }
        return sb.toString();
    }

    public static String toString(Iterable a, String delim) {
        return toString(a.iterator(), delim);
    }

    public static String toString(Iterator ai, String delim) {
        if (!ai.hasNext())
            return "";
        StringBuilder sb = new StringBuilder(ai.next().toString());
        while (ai.hasNext()) {
            sb.append(delim);
            sb.append(ai.next().toString());
        }
        return sb.toString();
    }
}

Related

1. ToString(ArrayList list)
2. toString(ArrayList characters)
3. toString(ArrayList arrayList)
4. vectorToStr(ArrayList vtr)