Created
May 26, 2018 23:23
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binary search
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import random | |
#Linear search | |
def linseach(ordered_list, element_to_find): | |
for i in ordered_list: | |
if i == element_to_find: | |
return True | |
return False | |
#Binary search | |
def binsearch(ordered_list, element_to_find): | |
end = len(ordered_list) - 1 | |
mid = int((end / 2)) | |
while mid != end: | |
end = len(ordered_list) - 1 | |
mid = int((end / 2)) | |
if element_to_find == ordered_list[mid]: | |
return True | |
else: | |
if element_to_find < ordered_list[mid]: | |
ordered_list = ordered_list[0:(mid+1)] | |
else: | |
ordered_list = ordered_list[(mid+1):(end+1)] | |
return False | |
#Returns True if num is in list, otherwise false. | |
list = sorted(random.sample(range(1,100), 50)) | |
num = int(input("Enter a number ")) | |
print(binsearch(list, num)) |
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