Binary Search : Sort Search « Collections Data Structure « Java

Home
Java
1.2D Graphics GUI
2.3D
3.Advanced Graphics
4.Ant
5.Apache Common
6.Chart
7.Class
8.Collections Data Structure
9.Data Type
10.Database SQL JDBC
11.Design Pattern
12.Development Class
13.EJB3
14.Email
15.Event
16.File Input Output
17.Game
18.Generics
19.GWT
20.Hibernate
21.I18N
22.J2EE
23.J2ME
24.JDK 6
25.JNDI LDAP
26.JPA
27.JSP
28.JSTL
29.Language Basics
30.Network Protocol
31.PDF RTF
32.Reflection
33.Regular Expressions
34.Scripting
35.Security
36.Servlets
37.Spring
38.Swing Components
39.Swing JFC
40.SWT JFace Eclipse
41.Threads
42.Tiny Application
43.Velocity
44.Web Services SOA
45.XML
Java » Collections Data Structure » Sort SearchScreenshots 
Binary Search
Binary Search
     
public class BinarySearchArray {
  private long[] a; 

  private int nElems; 

  public BinarySearchArray(int max) {
    a = new long[max]// create array
    nElems = 0;
  }

  public int size() {
    return nElems;
  }

  public int find(long searchKey) {
    return recFind(searchKey, 0, nElems - 1);
  }

  private int recFind(long searchKey, int lowerBound, int upperBound) {
    int curIn;

    curIn = (lowerBound + upperBound2;
    if (a[curIn== searchKey)
      return curIn; // found it
    else if (lowerBound > upperBound)
      return nElems; // can't find it
    else // divide range
    {
      if (a[curIn< searchKey// in upper half
        return recFind(searchKey, curIn + 1, upperBound);
      else
        // in lower half
        return recFind(searchKey, lowerBound, curIn - 1);
    }
  }

  public void insert(long value) {
    int j;
    for (j = 0; j < nElems; j++)
      // find where it goes
      if (a[j> value// (linear search)
        break;
    for (int k = nElems; k > j; k--)
      // move bigger ones up
      a[k= a[k - 1];
    a[j= value; // insert it
    nElems++; // increment size
  }

  public void display() {
    for (int j = 0; j < nElems; j++)
      System.out.print(a[j" ")
    System.out.println("");
  }
  public static void main(String[] args) {
    int maxSize = 100
    BinarySearchArray arr = new BinarySearchArray(maxSize)

    arr.insert(12)
    arr.insert(20);
    arr.insert(35);
    arr.insert(426);
    arr.insert(54);
    arr.insert(69);
    arr.insert(744);
    arr.insert(87);
    arr.insert(895);
    arr.insert(89);
    arr.insert(8);
    arr.insert(208);
    arr.insert(4);
    arr.insert(617);
    arr.insert(83);
    arr.insert(96);

    arr.display()// display array

    int searchKey = 27// search for item
    if (arr.find(searchKey!= arr.size())
      System.out.println("Found " + searchKey);
    else
      System.out.println("Can't find " + searchKey);
  }
}



           
         
    
    
    
    
  
Related examples in the same category
1.Linear search
2.Animation for quick sort
3.Quick Sort Implementation with median-of-three partitioning and cutoff for small arrays
4.Simple Sort DemoSimple Sort Demo
5.A simple applet class to demonstrate a sort algorithm
6.Sorting an array of StringsSorting an array of Strings
7.Simple version of quick sortSimple version of quick sort
8.Combine Quick Sort Insertion SortCombine Quick Sort Insertion Sort
9.Quick sort with median-of-three partitioningQuick sort with median-of-three partitioning
10.Fast Quick Sort
11.Selection sortSelection sort
12.Insert Sort for objectsInsert Sort for objects
13.Insert sortInsert sort
14.Bubble sortBubble sort
15.Merge sortMerge sort
16.Fast Merge Sort
17.Shell sortShell sort
18.Recursive Binary Search Implementation in Java
19.Topological sortingTopological sorting
20.Heap sortHeap sort
21.Sort NumbersSort Numbers
22.A quick sort demonstration algorithmA quick sort demonstration algorithm
23.Performing Binary Search on Java byte Array Example
24.Performing Binary Search on Java char Array Example
25.Performing Binary Search on Java double Array Example
26.Performing Binary Search on Java float Array Example
27.Performing Binary Search on Java int Array Example
28.Performing Binary Search on Java long Array Example
29.Performing Binary Search on Java short Array
30.Sort items of an array
31.Sort an array of objects
32.Sort a String array
33.Sort string array with Collator
34.Binary search routines
35.FastQ Sorts the [l,r] partition (inclusive) of the specfied array of Rows, using the comparator.FastQ Sorts the [l,r] partition (inclusive) of the specfied array of Rows, using the comparator.
36.A binary search implementation.
37.Handles QuickSort and all of its methods.
38.Implements QuickSort three different ways
39.A quick sort algorithm to sort Vectors or arrays. Provides sort and binary search capabilities.A quick sort algorithm to sort Vectors or arrays. Provides sort and binary search capabilities.
40.Returns an array of indices indicating the order the data should be sorted in.
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.