while loop help

[ichabod801]

You indented both the j and i increments, you only wanted to indent the j increment. Unindent the line I += 1, so that it is part of the while I < 5: loop, but not part of the while J < 4: loop. And please don't post code like that. Just use python tags without formatting. See the BBCode tutorial in my signature below.

[nilamo]

Do you HAVE to use a while loop? Because this is just rewriting list_.sort() as an in-place sort.

[volcano63]

Do you HAVE to use a while loop?  Because this is just rewriting list_.sort() as an in-place sort.

Homework, sir

[smbx33]

I keep getting the same output [4, 5, 2, 6, 8] instead of [2, 4, 5, 6, 8]

here's my code

list_ = [6,8,4,5,2]
I = 0
J = 999
while I < 5:
   J = 0
   while J < 4:
       list_[J], list_[J + 1] = list_[J + 1], list_[J]  # This if statement will check values in list and then...
       J += 1
       I += 1
print(list_)

I get the output desired output keeping the IF statement....which I see you removed. The purpose of the If statement is to check the values. Your code does no checking of the values, its just random swapping, which is why you don't get the desired result.   Below I have attached an example

list_ = [6,8,4,5,2]
I = 0
J = 999
while I < 5:

    J = 0
    while J < 4:
        if list_[J]> list_[J+1]:    # This if statement will check values in list and then...
            list_[J],list_[J+1] = list_[J+1],list_[J]# swap the values if the item after it has a lesser value
            J += 2                  # it should skip over the swap it just made.
           

        else:
            J += 1                     # keep moving forward 1
            I += 1                     # so the loop doesn't continue forever

print(list_)

[volcano63]

       list_[J], list_[J + 1] = list_[J + 1], list_[J]

Just an idle observation - not for OP, it's slightly advanced! - the line above may be re-written as

       list_[J:J+2] = list_[J+1],list_[J]

[ichabod801]

list_[J:J+2] = list[J+1:J-1:-1]