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CSCI 1001. overview of. computer science. ALGORITHM EFFICIENCY III. Input : a list a 1 ,…,a n set g to n , ℓ to 1 while ℓ ≤ g do if a ℓ ≠ 0 then set ℓ to ℓ+ 1 else set g to g-1, r to ℓ+ 1 while r ≤ n do set a r-1 to a r , r to r+1
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CSCI 1001 overview of computer science ALGORITHM EFFICIENCY III
Input: a list a1,…,an set g to n, ℓto 1 whileℓ≤ gdo if aℓ≠ 0 then setℓto ℓ+1 else set g to g-1, r to ℓ+1 while r ≤ ndo set ar-1 to ar, r to r+1 output a1,…,ag and stop.
Input: a list a1,…,an set ℓ1…ℓn to 0, g to 0 for each i in {1,…,n} do if ai ≠ 0 then set g to g+1 set ℓgto ai output ℓ1,…,ℓg and stop.
Input: a list a1,…,an set ℓ to 1, r to n while ℓ ≤ rdo if aℓ = 0 then set aℓ to ar, r to r-1 else set ℓ to ℓ + 1 ifar = 0 then set r to r-1 output a1,…,ar and stop.
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liar_liar = ‘def liar_liar_pants_on_fire(code): def will_it_halt(code,input): … def loop_forever(): while True: None if will_it_halt(code, code): loop_forever() else: return True’ liar_liar_pants_on_fire(liar_liar)
