Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

public class Main {
    public static String join(Collection<? extends Object> collection, String separator) {
        List<Object> interleaved = interleave(collection, separator);
        return join(interleaved);
    }

    private static String join(List<? extends Object> collection) {
        StringBuilder result = new StringBuilder();
        for (Object object : collection)
            result.append(object.toString());
        return result.toString();
    }

    private static List<Object> interleave(Collection<? extends Object> collection, String separator) {
        List<Object> interleaved = new ArrayList<Object>();
        for (Object object : collection) {
            interleaved.add(object);
            interleaved.add(separator);
        }
        if (!interleaved.isEmpty()) {
            interleaved.remove(interleaved.size() - 1);
        }
        return interleaved;
    }
}