7 else -> <bold>null</bold>
9 	return <bold>s</bold>
4 		var <bold>s = when {</bold>
4 			var s = <bold>when {</bold>
7 				else -> <bold>null</bold>

6 n < 0 -> <bold>"-"</bold>
9 	return <bold>s</bold>
4 		var <bold>s = when {</bold>
4 			var s = <bold>when {</bold>
6 				n < 0 -> <bold>"-"</bold>

5 n > 0 -> <bold>"+"</bold>
9 	return <bold>s</bold>
4 		var <bold>s = when {</bold>
4 			var s = <bold>when {</bold>
5 				n > 0 -> <bold>"+"</bold>
