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48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
def partition(tab, debut, fin):
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pivot = tab[fin]
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i = debut - 1
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for j in range(debut, fin):
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if tab[j] <= pivot:
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i += 1
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tab[i], tab[j] = tab[j], tab[i]
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tab[i + 1], tab[fin] = tab[fin], tab[i + 1]
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return i + 1
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def fusion(tab, debut, milieu, fin):
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gauche = tab[debut : milieu + 1]
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droite = tab[milieu + 1 : fin + 1]
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i, j, k = 0, 0, debut
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while i < len(gauche) and j < len(droite):
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if gauche[i] <= droite[j]:
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tab[k] = gauche[i]
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i += 1
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else:
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tab[k] = droite[j]
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j += 1
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k += 1
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while i < len(gauche):
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tab[k] = gauche[i]
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i += 1
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k += 1
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while j < len(droite):
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tab[k] = droite[j]
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j += 1
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k += 1
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def tri_fusion_partition(tab, debut, fin):
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if debut < fin:
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pivot_index = partition(tab, debut, fin)
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tri_fusion_partition(tab, debut, pivot_index - 1)
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tri_fusion_partition(tab, pivot_index + 1, fin)
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fusion(tab, debut, pivot_index, fin)
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tableau = [34, 7, 23, 32, 5, 62, 32, 8, 9]
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tri_fusion_partition(tableau, 0, len(tableau) - 1)
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print("Tableau trié :", tableau)
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