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Merged
merged 2 commits into from
Mar 28, 2019
Merged

Add julialang binary search sample #107

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b13b379
Add julialang binary search sample
coditori Mar 28, 2019
652144e
Add unit test
coditori Mar 28, 2019
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27 changes: 27 additions & 0 deletions 01_introduction_to_algorithms/julia/binary_search.jil
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Original file line number Diff line number Diff line change
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using Test

function binary_search(arr,item)
low = 0
high = length(arr)

while low <= high
mid = (low + high) ÷ 2
guess = 0
try
guess = arr[mid]
catch
return nothing
end
if guess == item
return mid
elseif guess > item
high = mid - 1
else
low = mid + 1
end
end
end

arr = [1,3,5,7,9]
@test binary_search(arr,3) == 2
@test binary_search(arr,-1) == nothing