Exam pseudocode recursive function -



Exam pseudocode recursive function -

i have exam question:

look @ illustration of pseudocode:

algorithm a(a, b) { // precond: & b type of int // postcond: function return? if (a == b) return( 0 ) else if (a < b) homecoming (-a(b, a)) else homecoming (a(a-1, b-1)); }

the answers given are:

a) a-b b) a+b c) max(a,b) d) loop infinitely

personally think it's d), wanted create sure.

the function terminates when a==b; show doesn't terminate, show & b never closer successive calls -- in case, pretty easy.

(the above not take business relationship overflow. also, (d) can't correct, since doesn't loop @ all.)

pseudocode

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