kopia lustrzana https://github.com/animator/learn-python
19 wiersze
540 B
Python
19 wiersze
540 B
Python
import math
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def bsearch(A, key_to_search):
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n = len(A)
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lg = int(math.log2(n-1)) + 1
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pos = 0
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for i in range(lg - 1, -1, -1):
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if A[pos] == key_to_search:
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return pos
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new_pos = pos | (1 << i)
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if new_pos < n and A[new_pos] <= key_to_search:
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pos = new_pos
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return pos if A[pos] == key_to_search else -1
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if __name__ == "__main__":
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A = list(map(int, input("Enter the array elements: ").split()))
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key = int(input("Enter the number to search: "))
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print(bsearch(A, key))
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