Python/searches/jump_search.py

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Python
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import math
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def jump_search(arr, x):
n = len(arr)
step = int(math.floor(math.sqrt(n)))
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prev = 0
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while arr[min(step, n) - 1] < x:
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prev = step
step += int(math.floor(math.sqrt(n)))
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if prev >= n:
return -1
while arr[prev] < x:
prev = prev + 1
if prev == min(step, n):
return -1
if arr[prev] == x:
return prev
return -1
if __name__ == "__main__":
arr = [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610]
x = 55
print(f"Number {x} is at index {jump_search(arr, x)}")