Stair-climbing puzzle: Difference between revisions
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'''Solution (Tacit):'''
<lang j>step =: 0.6 > ?@0:
attemptClimb =: [: <:`>:@.step
isNotUpOne =: -.@(+/@])
step_up=: (] , attemptClimb)^:isNotUpOne^:_
Note that
J's verbs (functions) always take an argument i.e. there is no such thing as a niladic verb. Verbs that ignore their arguments (e.g. <code>step</code> and <code>attemptClimb</code>) achieve the same effect.
'''Solution (Explicit):'''
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