Merge sort. ArrayIndexOutOfBoundsException [migrated]
- by user94892
When I execute the program I am getting an error as stated below the program.
Please help me figure out the problem..
import java.util.*;
class Mergesort
{
public static void main(String args[])
{
Scanner in= new Scanner(System.in);
System.out.println("Enter the number of elements");
int n= in.nextInt();
int a[]= new int[n];
System.out.println("Enter the contents");
for(int i=0; i<n; i++)
{
a[i]=in.nextInt();
}
a = mergesort(a,n);
for(int i=0; i<n; i++)
{
System.out.println(a[i]);
}
}
public static int[] mergesort(int[] x, int z)
{
if(z==1)
{
return x;
}
int b[]=new int[z/2]; int c[]=new int[z-z/2];
int i,j,k;
for(int p=0;p<z/2; p++)
{
b[p]= x[p];
c[p]= x[p+z/2];
}
c[z-z/2-1]= x[z-1];
b= mergesort(b,z/2);
c= mergesort(c,z-z/2);
for(i=0,j=0,k=0; k<z; k++)
{
if(b[i]<=c[j])
{
x[k]=b[i];
i++;
}
else if( b[i]>c[j])
{
x[k]=c[j];
j++;
}
else if(i== z/2)
{
x[k]= c[j];
j++;
}
else if(j == z-z/2)
{
x[k]= b[i];
i++;
}
}
return x;
}
}
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 1
at Mergesort.mergesort(Mergesort.java:41)
at Mergesort.mergesort(Mergesort.java:36)
at Mergesort.main(Mergesort.java:16)
