Example usage for java.util Collections sort

Introduction

In this page you can find the example usage for java.util Collections sort.

Prototype

@SuppressWarnings("unchecked")
public static <T extends Comparable<? super T>> void sort(List<T> list)

Source Link

Document

Sorts the specified list into ascending order, according to the Comparable natural ordering of its elements.

Usage

From source file:NameSort.java

public static void main(String args[]) {
    String n[] = new String[] { "John", "Lennon", "Karl", "Marx", "Groucho", "Marx", "Oscar", "Grouch" };

    List l = Arrays.asList(n);
    Collections.sort(l);
    System.out.println(l);//from   w  ww  . ja v  a 2  s .com
}

From source file:Main.java

public static void main(String[] args) {
    List<String> list = new ArrayList<>();
    list.add("Java");
    list.add("R");
    list.add("CSS");
    list.add("XML");

    Collections.sort(list);
    System.out.println("List: " + list);

    Collections.reverse(list);/*  w ww .  ja v  a2 s . c  o  m*/
    System.out.println("List: " + list);

}

From source file:Main.java

public static void main(String[] args) {
    List<String> list = new ArrayList<>();
    list.add("Java");
    list.add("R");
    list.add("CSS");
    list.add("XML");

    Collections.sort(list);
    System.out.println("List: " + list);

    // Rotate elements by 2
    Collections.rotate(list, 2);/*w w w  .  j a v  a 2s .  co  m*/
    System.out.println("After  Rotating by  2: " + list);

}

From source file:Main.java

public static void main(String[] args) {
    List<String> list = new ArrayList<>();
    list.add("Java");
    list.add("R");
    list.add("CSS");
    list.add("XML");

    Collections.sort(list);
    System.out.println("List: " + list);

    Collections.shuffle(list);//from  w ww . j  a  v  a 2  s.co  m
    System.out.println("List: " + list);

    Collections.shuffle(list);
    System.out.println("List: " + list);
}

From source file:Main.java

public static void main(String[] args) {
    List<String> list = new ArrayList<>();
    list.add("Java");
    list.add("R");
    list.add("CSS");
    list.add("XML");

    Collections.sort(list);
    System.out.println("List: " + list);

    int index = Collections.binarySearch(list, "CSS");
    System.out.println("CSS in List  is at " + index);

    index = Collections.binarySearch(list, "Javascript");
    System.out.println("Javascript in List is  at " + index);

}

From source file:SearchTest.java

public static void main(String args[]) {
    String simpsons[] = { "Bart", "Hugo", "Lisa", "Marge", "Homer", "Maggie", "Roy" };

    // Convert to list
    ArrayList list = new ArrayList(Arrays.asList(simpsons));

    // Ensure list sorted
    Collections.sort(list);
    System.out.println("Sorted list: [length: " + list.size() + "]");
    System.out.println(list);//from  w ww .  j  a  v a2  s .c  o  m

    // Search for element in list
    int index = Collections.binarySearch(list, "Maggie");
    System.out.println("Found Maggie @ " + index);

    // Search for element not in list
    index = Collections.binarySearch(list, "Jimbo Jones");
    System.out.println("Didn't find Jimbo Jones @ " + index);

    // Insert
    int newIndex = -index - 1;
    list.add(newIndex, "Jimbo Jones");
    System.out.println("With Jimbo Jones added: [length: " + list.size() + "]");
    System.out.println(list);
}

From source file:Main.java

public static void main(String[] args) {
    ArrayList<String> arrayList = new ArrayList<String>();

    arrayList.add("1");
    arrayList.add("4");
    arrayList.add("2");
    arrayList.add("5");
    arrayList.add("3");

    Collections.sort(arrayList);
    System.out.println("Sorted ArrayList contains : " + arrayList);
    int index = Collections.binarySearch(arrayList, "4");
    System.out.println("Element found at : " + index);
}

From source file:Main.java

public static void main(String[] args) {
    ArrayList<String> arrayList = new ArrayList<String>();

    arrayList.add("1");
    arrayList.add("3");
    arrayList.add("5");
    arrayList.add("2");
    arrayList.add("4");

    Collections.sort(arrayList);

    for (String str : arrayList)
        System.out.println(str);//w  ww . j  av a2s  . c  o m
}

From source file:MainClass.java

public static void main(String args[]) {
    String str[] = { "B", "H", "L", "M", "I", "N", "R" };
    // Convert to list
    List list = new ArrayList(Arrays.asList(str));
    // Ensure list sorted
    Collections.sort(list);
    System.out.println("Sorted list: [length: " + list.size() + "]");
    System.out.println(list);//w w w  .  jav  a 2s . c o m
    // Search for element in list
    int index = Collections.binarySearch(list, "M");
    System.out.println("Found M @ " + index);
    // Search for element not in list
    index = Collections.binarySearch(list, "J");
    System.out.println("Didn't find J @ " + index);
    // Insert
    int newIndex = -index - 1;
    list.add(newIndex, "J");
    System.out.println("With J added: [length: " + list.size() + "]");
    System.out.println(list);
}

From source file:Main.java

public static void main(String[] args) {
    List<String> list = new LinkedList<String>();

    list.add("a");
    list.add("b");
    list.add("c");
    list.add("d");
    list.add("e");
    list.add("f");

    Collections.sort(list);
    System.out.println(list);/*from  w  ww. j a  v  a2 s.co m*/
    int index = Collections.binarySearch(list, "c");
    if (index > 0) {
        System.out.println("Found at index = " + index);
        String month = (String) list.get(index);
        System.out.println(month);
    }
}