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  1. #include <stdio.h>
  2.  
  3. int main(void) 
  4. {
  5.     int n,i,j,a[100];
  6.     scanf("%d",&n);
  7.     for(i=0;i<n;i++)
  8.         scanf("%d",&a[i]);    //{1, 2, 3, 4, 5, 6, 7}   {     
  9.     for(i=0;i<n;i++)
  10.         printf("%d ",a[i]);    //{1, 2, 3, 4, 5, 6, 7}   {     
  11.     printf("\n");
  12.     for(i=0;i<n;i++)
  13.     {
  14.     	for(j=i+1;j<n;j++)
  15.     	{
  16.     		if(i%2)
  17.     		{
  18.     			if(a[i]>a[j])
  19.     			    a[i]=a[i]+a[j]-(a[j]=a[i]);
  20.     		}
  21.     		else
  22.     		{
  23.     			if(a[i]<a[j])
  24.     			    a[i]=a[i]+a[j]-(a[j]=a[i]);       // a[0]=1+2-(a[1]=1)   // a[0]=2   a[1]=1
  25.     		}
  26.     	}
  27.     }
  28.     for(i=0;i<n;i++)
  29.       printf("%d ",a[i]);
  30.     	return 0;
  31. }
  32.  
Success #stdin #stdout 0s 4176KB
comments (?)
stdin
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7 1 2 3 4 5 6 7
stdout
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1 2 3 4 5 6 7 
7 1 6 2 5 3 4
https://ideone.com/ximsy3
language:
C (gcc 8.3)
created:
3 years ago
visibility:
public

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