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# Error in for loop ?

Here we are trying to loop from the tapped index to the last index of the MutableList, simultaneously removing the elements from the List... So, for example...

```var integers: MutableList<Int> = arrayListOf(0,1,2,3,4,5,6,7,8,9)
for (i in 5..integers.lastIndex)
{
integers.removeAt(i)
System.out.println(integers.toString())
}
LOOP 1-------------------
i = 5
integers = [0,1,2,3,4,6,7,8,9] // "5" at Index 5 removed

LOOP 2-------------------
i = 6
integers = [0,1,2,3,4,6,8,9] // "7" at Index 6 removed

LOOP 3-------------------
i = 7
integers = [0,1,2,3,4,6,8] // "9" at Index 7 removed

LOOP 4-------------------
i = 8
integers = [0,1,2,3,4,6,8] // Index 8 OUT OF BOUNDS
```

We should rather loop backwards

```for (i in integers.lastIndex downTo 5)
{
integers.removeAt(i)
System.out.println(integers.toString())
}

Console -------------------
[0, 1, 2, 3, 4, 5, 6, 7, 8]
[0, 1, 2, 3, 4, 5, 6, 7]
[0, 1, 2, 3, 4, 5, 6]
[0, 1, 2, 3, 4, 5]
[0, 1, 2, 3, 4]
-----------------------------
```