# How to use for loop (descending order)
**URL:** https://discourse.julialang.org/t/how-to-use-for-loop-descending-order/22022
**Category:** General Usage
**Tags:** question
**Created:** [March 19, 2019, 7:32am UTC](https://discourse.julialang.org/t/how-to-use-for-loop-descending-order/22022 "2019-03-19T07:32:34Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@11111](https://discourse.julialang.org/u/11111)
#### Post date: [March 19, 2019, 7:32am UTC](https://discourse.julialang.org/t/how-to-use-for-loop-descending-order/22022/1 "2019-03-19T07:32:34Z")
i want to execute for\_loop like (n→n-1→n-2…)
i wrote the following code but it didn’t work.
```julia
n=3
for i in n:1
...
end
```
Please tell me how to solve it.
---
### Author:  [@mauro3](https://discourse.julialang.org/u/mauro3)
#### Post date: [March 19, 2019, 7:33am UTC](https://discourse.julialang.org/t/how-to-use-for-loop-descending-order/22022/2 "2019-03-19T07:33:23Z")
`for i in n:-1:1` without a step, the default step `1` is used.
---
### Author:  [@alirezamecheng](https://discourse.julialang.org/u/alirezamecheng)
#### Post date: [March 19, 2019, 10:47am UTC](https://discourse.julialang.org/t/how-to-use-for-loop-descending-order/22022/3 "2019-03-19T10:47:37Z")
As @mauro3 said, change your code like this
```julia
n=3
for i in n:-1:1
...
end
```
---
### Author:  [@stevengj](https://discourse.julialang.org/u/stevengj)
#### Post date: [March 19, 2019, 12:37pm UTC](https://discourse.julialang.org/t/how-to-use-for-loop-descending-order/22022/4 "2019-03-19T12:37:36Z")
You can also use
```julia
for i in reverse(1:n)
...
end
```
(Fixed typo noted by @rdeits)
---
### Author:  [@11111](https://discourse.julialang.org/u/11111)
#### Post date: [March 20, 2019, 5:52am UTC](https://discourse.julialang.org/t/how-to-use-for-loop-descending-order/22022/6 "2019-03-20T05:52:08Z")
thanks!!
it worked well.