Sorting an array based on a different arrays values

[inzombiak]

Basically i have to do what it says in the title.for example if
arr1 = {18,19,4,11}
arr2 = {1,2,3,4}
after sorting
arr2 = {2,1,4,3}
Basically i have to sort arr2 in descending order based on arr1.
Ive tried doing it with the bubble sort method but something keeps going wrong. Here is my code
for(i = 0; i < k; i++)
{
for(j = 0; j < k+1; j++)
{
if(arr1[i] < arr1[j])
{
temp = arr2[i];
arr2[i] = arr2[j];
arr2[j] = temp;
}
}
}

[abellia]

It is totally unclear what you are trying to accomplish.

[LB]

Shouldn't it be {3,4,1,2} after sorting? That's the only way it could make sense.
EDIT: Nevermind, you wanted descending order, of course...whoops.

Basically, whatever changes to make to array 1, also make to array 2. You can't only change array 2, you have to change array 1 at the same time.

[inzombiak]

im trying to get the elements in arr2 to show how large the corresponding element in arr1 is with 1 being the largest and 5 being the smallest

[LB]

Yes, and I just explained. In your code you are only changing arr2, but arr1 stays the same, so...it doesn't sort correctly, it just goes back and forth on each pass.

[inzombiak]

Like this?
for(i = 0; i < k; i++)
{
for(j = 0; j < k+1; j++)
{
if(arr1[i] < arr1[j])
{
temp = arr2[i];
arr2[i] = arr2[j];
arr2[j] = temp;
temp = arr1[i];
arr1[i] = arr1[j];
arr1[j] = temp;
}
}
}

[cristi121]

That looks right to me. Go ahead and test it!
Also, please use code tags next time you post some code. Thanks !

[inzombiak]

Thank you so much for the help