Programming Tutorials

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Insert an element in Array, Search and Sort Array by using java program

By: Saravanan in Java Tutorials on 2010年01月01日 [フレーム]

In this tutorial we are going to see how to insert an element for specified index and how to search an element in array and not in array.

import java.util.*;
public class ArrayExample
 {
 public static void main(String args[]) throws Exception
 {
 int a[] = {9, 4, 6, -3, -7, 2, 3, -2, 5, -9, 4};
 Arrays.sort(a);
 printArray("Sorted array", a);
 int i = Arrays.binarySearch(a, 9);
 System.out.println("Array have 9. " + i);
 i = Arrays.binarySearch(a, 8);
 System.out.println("Array have not 8." + i);
 int i1 = -i - 1;
 a = insertElement(a, 8, i1);
 printArray("In array 8 is added", a);
 }
 private static void printArray(String message, int a[]) 
 {
 System.out.println(message + ": [length: " + a.length + "]");
 for (int i=0, n=a.length; i<n; i++)
 {
 if (i != 0) System.out.print(", ");
 System.out.print(a[i]);
 }
 System.out.println();
 }
 private static int[] insertElement(int original[], int element, int in)
 {
 int length = original.length;
 int destination[] = new int[length+1];
 System.arraycopy(original, 0, destination, 0, in);
 destination[index] = element;
 System.arraycopy(original, in, destination, in+1, length-in);
 return destination;
 }
}

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