When we returned base, how did its value go into indices?
Was it because it was null?
Base and Indices equal?
No, its not because its value was null. its because the way allIndices() function was called.
Just read a little bit about head recursion.
see this line
indices = allIndices(…), …(1)
when allIndices() is called last time(base condition is true), it will return base array and that will be received by indices array due to call …(1)
Thanks.
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