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Ruby, 14 bytes ->{_1|[]in[_]} Alternative solution: ->a{!(a|a)[1]} Try this online! Couple of other solutions I developed: ->a{!a.uniq[1]} # 15 bytes ->{!(_1|[])[1]} # 15...
Answer
#4: Post edited
by
radarek
·
2022-02-03T18:43:54Z (over 2 years ago)
- # [Ruby](https://www.ruby-lang.org/), 14 bytes
- ```ruby
- ->{_1|[]in[_]}
- ```
- Alternative solution:
- ```ruby
- ->a{!(a|a)[1]}
- ```
- **[Try this online!](https://ato.pxeger.com/run?1=m72kqDSpcsHiNNuYpaUlaboW63TtquMNa6JjM_Oi42NrIYI3JxYopEVHG-pAYWysgrKCrp1CSVFpKhdYygAsYaZjDpNKS8wphsqBlMMAmjYkGYhUaV5KalpmXmqKRmV-qUJKvkJefolCXmpqikJJvkJGYl5KTqpCSUZmsSbEYQsWQGgA)**
- Couple of other solutions I developed:
- ```ruby
- ->a{!a.uniq[1]} # 15 bytes
- ->{!(_1|[])[1]} # 15 bytes
->a{(a|[]).one?} # 16 bytes- ```
- # [Ruby](https://www.ruby-lang.org/), 14 bytes
- ```ruby
- ->{_1|[]in[_]}
- ```
- Alternative solution:
- ```ruby
- ->a{!(a|a)[1]}
- ```
- **[Try this online!](https://ato.pxeger.com/run?1=m72kqDSpcsHiNNuYpaUlaboW63TtquMNa6JjM_Oi42NrIYI3JxYopEVHG-pAYWysgrKCrp1CSVFpKhdYygAsYaZjDpNKS8wphsqBlMMAmjYkGYhUaV5KalpmXmqKRmV-qUJKvkJefolCXmpqikJJvkJGYl5KTqpCSUZmsSbEYQsWQGgA)**
- Couple of other solutions I developed:
- ```ruby
- ->a{!a.uniq[1]} # 15 bytes
- ->{!(_1|[])[1]} # 15 bytes
- ->a{(a|a).one?} # 15 bytes
- ```
#3: Post edited
by
radarek
·
2022-02-03T18:41:44Z (over 2 years ago)
- # [Ruby](https://www.ruby-lang.org/), 14 bytes
- ```ruby
- ->{_1|[]in[_]}
- ```
- **[Try this online!](https://ato.pxeger.com/run?1=m72kqDSpcsHiNNuYpaUlaboW63TtquMNa6JjM_Oi42NrIYI3JxYopEVHG-pAYWysgrKCrp1CSVFpKhdYygAsYaZjDpNKS8wphsqBlMMAmjYkGYhUaV5KalpmXmqKRmV-qUJKvkJefolCXmpqikJJvkJGYl5KTqpCSUZmsSbEYQsWQGgA)**
- Couple of other solutions I developed:
- ```ruby
- ->a{!a.uniq[1]} # 15 bytes
- ->{!(_1|[])[1]} # 15 bytes
- ->a{(a|[]).one?} # 16 bytes
- ```
- # [Ruby](https://www.ruby-lang.org/), 14 bytes
- ```ruby
- ->{_1|[]in[_]}
- ```
- Alternative solution:
- ```ruby
- ->a{!(a|a)[1]}
- ```
- **[Try this online!](https://ato.pxeger.com/run?1=m72kqDSpcsHiNNuYpaUlaboW63TtquMNa6JjM_Oi42NrIYI3JxYopEVHG-pAYWysgrKCrp1CSVFpKhdYygAsYaZjDpNKS8wphsqBlMMAmjYkGYhUaV5KalpmXmqKRmV-qUJKvkJefolCXmpqikJJvkJGYl5KTqpCSUZmsSbEYQsWQGgA)**
- Couple of other solutions I developed:
- ```ruby
- ->a{!a.uniq[1]} # 15 bytes
- ->{!(_1|[])[1]} # 15 bytes
- ->a{(a|[]).one?} # 16 bytes
- ```
#2: Post edited
by
radarek
·
2022-01-21T17:53:41Z (almost 3 years ago)
- # [Ruby](https://www.ruby-lang.org/), 14 bytes
- ```ruby
- ->{_1|[]in[_]}
- ```
- **[Try this online!](https://ato.pxeger.com/run?1=m72kqDSpcsHiNNuYpaUlaboW63TtquMNa6JjM_Oi42NrIYI3JxYopEVHG-pAYWysgrKCrp1CSVFpKhdYygAsYaZjDpNKS8wphsqBlMMAmjYkGYhUaV5KalpmXmqKRmV-qUJKvkJefolCXmpqikJJvkJGYl5KTqpCSUZmsSbEYQsWQGgA)**
Couple of other bytes solutions I developed:- ```ruby
- ->a{!a.uniq[1]} # 15 bytes
- ->{!(_1|[])[1]} # 15 bytes
- ->a{(a|[]).one?} # 16 bytes
- ```
- # [Ruby](https://www.ruby-lang.org/), 14 bytes
- ```ruby
- ->{_1|[]in[_]}
- ```
- **[Try this online!](https://ato.pxeger.com/run?1=m72kqDSpcsHiNNuYpaUlaboW63TtquMNa6JjM_Oi42NrIYI3JxYopEVHG-pAYWysgrKCrp1CSVFpKhdYygAsYaZjDpNKS8wphsqBlMMAmjYkGYhUaV5KalpmXmqKRmV-qUJKvkJefolCXmpqikJJvkJGYl5KTqpCSUZmsSbEYQsWQGgA)**
- Couple of other solutions I developed:
- ```ruby
- ->a{!a.uniq[1]} # 15 bytes
- ->{!(_1|[])[1]} # 15 bytes
- ->a{(a|[]).one?} # 16 bytes
- ```
#1: Initial revision
by
radarek
·
2022-01-18T19:31:42Z (almost 3 years ago)
# [Ruby](https://www.ruby-lang.org/), 14 bytes
```ruby
->{_1|[]in[_]}
```
**[Try this online!](https://ato.pxeger.com/run?1=m72kqDSpcsHiNNuYpaUlaboW63TtquMNa6JjM_Oi42NrIYI3JxYopEVHG-pAYWysgrKCrp1CSVFpKhdYygAsYaZjDpNKS8wphsqBlMMAmjYkGYhUaV5KalpmXmqKRmV-qUJKvkJefolCXmpqikJJvkJGYl5KTqpCSUZmsSbEYQsWQGgA)**
Couple of other bytes solutions I developed:
```ruby
->a{!a.uniq[1]} # 15 bytes
->{!(_1|[])[1]} # 15 bytes
->a{(a|[]).one?} # 16 bytes
```