public class MyQuickSort {
private int array[ ] ;
private int length;
public void sort( int [ ] inputArr) {
if ( inputArr == null || inputArr.length == 0 ) {
return ;
}
this .array = inputArr;
length = inputArr.length ;
quickSort( 0 , length - 1 ) ;
}
private void quickSort( int lowerIndex, int higherIndex) {
int i = lowerIndex;
int j = higherIndex;
// calculate pivot number, I am taking pivot as middle index number
int pivot = array[ lowerIndex+ ( higherIndex- lowerIndex) / 2 ] ;
// Divide into two arrays
while ( i <= j) {
/**
* In each iteration, we will identify a number from left side which
* is greater then the pivot value, and also we will identify a number
* from right side which is less then the pivot value. Once the search
* is done, then we exchange both numbers.
*/
while ( array[ i] < pivot) {
i++;
}
while ( array[ j] > pivot) {
j--;
}
if ( i <= j) {
exchangeNumbers( i, j) ;
//move index to next position on both sides
i++;
j--;
}
}
// call quickSort() method recursively
if ( lowerIndex < j)
quickSort( lowerIndex, j) ;
if ( i < higherIndex)
quickSort( i, higherIndex) ;
}
private void exchangeNumbers( int i, int j) {
int temp = array[ i] ;
array[ i] = array[ j] ;
array[ j] = temp;
}
public static void main
( String a
[ ] ) {
MyQuickSort sorter = new MyQuickSort( ) ;
int [ ] input = { 24 ,2 ,45 ,20 ,56 ,75 ,2 ,56 ,99 ,53 ,12 } ;
sorter.sort ( input) ;
for ( int i: input) {
}
}
}
- See more at: http: //w...content-available-to-author-only...e.com/java-sorting-algorithms/quick-sort/#sthash.jCEa5Wfk.dpuf
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compilation info
Main.java:67: error: class, interface, or enum expected
- See more at: http://www.java2novice.com/java-sorting-algorithms/quick-sort/#sthash.jCEa5Wfk.dpuf
^
1 error
stdout