Test z informatyki z zakresu algorytmów
Czym jest algorytm?
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Co nazywamy wysokością drzewa.
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Czy poniższy algorytm obliczania wielomianu stopnia n według schematu Hornera i jego specyfikacja są prawidłowe? Jeśli tak, to napisz, że algorytm jest poprawny. Jeśli nie, to nanieś odpowiednie korekty.
Dane: n – nieujemna liczba całkowita (stopień wielomianu);
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Wynik: Wartość wielomianu stopnia n dla wartości argumentu x = z. |
START
Wprowadź n
i:=0
y:= a0
Tak i = n Nie
STOP i := i + 1
y:=yz+an
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Co nazywamy drzewem wyrażenia?
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Znajdź element w uporządkowanej tablicy N elementowej stosując algorytm poszukiwania przez poławianie
Opisz ‘słownie’ zasadę działania tego algorytmu.
Napisz specyfikację problemu
Narysuj schemat blokowy
Napisz schemat opisowy (krok po kroku) tego algorytmu.
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Napisz specyfikację problemu oraz algorytm blokowy programu, przepisującego elementy z tablicy N elementowej do nowej tablicy, umieszczając je w nowej tablicy od końca.
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Zadanie na ocenę celującą. Mamy nieposortowaną tablice dwuwymiarową N, taką jak na poniższym rysunku.
7 | 16 | 5 | 2 | 10 | 8 | 9 | 15 | 18 | 20 |
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11 | 19 | 1 | 6 | 3 | 12 | 14 | 17 | 4 | 13 |
Napisz specyfikację oraz algorytmy – opisowy (krok po kroku) i blokowy, sortujący tą dwuwymiarową tablice do postaci jak na rysunku poniżej.
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
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11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
- podpowiedź: odwołanie do tego typu tabel następuje poprzez podwójny indeks np.:
Wynik:=Xi,j gdzie i = 1…10, j = 1…2
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