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Add Jump Search

pull/22/head
dani16595 4 years ago
parent
commit
ac9248fc4c
1 changed files with 39 additions and 0 deletions
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      searching_algo/Jump_Search.py

+ 39
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searching_algo/Jump_Search.py View File

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import math
def jumpSearch( arr , x ):
# Finding block size to be jumped
n = len(arr)
step = math.sqrt(n)
# Finding the block where element is
# present (if it is present)
prev = 0
while arr[int(min(step, n)-1)] < x:
prev = step
step += math.sqrt(n)
if prev >= n:
return -1
# Doing a linear search for x in
# block beginning with prev.
while arr[int(prev)] < x:
prev += 1
# If we reached next block or end
# of array, element is not present.
if prev == min(step, n):
return -1
# If element is found
if arr[int(prev)] == x:
return int(prev)
return -1
arr = [ 0, 1, 3, 4, 4, 5, 8, 13, 22, 24, 55, 59, 122, 213, 422, 555 ]
x = 55
index = jumpSearch(arr, x)
print("Number is at index {}".format(index))

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