Thread: bubble sorting a 2-d array

I am having problems with bubble sorting a 2d array. I know I need 3 loops but I do not know where to put the third. any help would be greatly appreciated.

Code:

void bubble(int arr[])
{
   int i, j;

   for (i = 0; i < SIZE - 1; i++)
   {
      for (j = SIZE - 1; j > i; j--)
         if (arr[j - 1] > arr[j])
            swap(&arr[j - 1], &arr[j]);
      printf("\nAfter pass %d: ", i);
      printArr(arr);
   }
}

void swap(int *pNum1, int *pNum2)
{
   int temp;   // NOT int *
   temp = *pNum1;
   *pNum1 = *pNum2;
   *pNum2 = temp;
}

u dont need three loops, its just the 2 loop, with 2 two two an check the elements and swap it, look at the following code which could help you

Code:

/*program to arrange the array elements in increasing order*/
#include<stdio.h>

void swap(int*, int *);  // fucntion to sawp the elements

int main()
{
        int a[10];
        int i,j;
        
        for(i=0;i<10;i++)
                scanf("%d",&a[i]);
               
        for(i=0;i<10-1;i++)
        {
            for(j=i+1;j<10;j++)
            {
                if(a[i]>a[j]) // check two elements of the array is i > j swap it 
                swap(&a[i],&a[j]);
        }
   }
   
        for(i=0;i<10;i++)
        printf("%d\t",a[i]);        
        
        getchar();
}

void swap(int *num1, int *num2)  // fucntion to swap the elements 
{
    *num1^=*num2;
    *num2^=*num1;
    *num1^=*num2;
}

s.s.harish

fine i get the result as 0 for both a and b

is that b'cose it don't work for msomehting like this

swap(&a, &a);

when i do this it wont work as expected.
is that my thinking is correct, if not so please correct me

thank u very much