How do I find the difference between two 2D array in python ?
First array and second array
arr1 = [[1,1],[1,2],[1,3],[1,4],[1,5]]
arr2 = [[1,2],[1,3],[1,4]]
The result I want
result = [[1,1],[1,5]]
Find difference between two 2D array in python
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1 Answers
You can first convert all element to tuple then use set and difference like below:
>>> set(map(tuple,arr1)).difference(map(tuple,arr2))
{(1, 1), (1, 5)}
>>> list(map(list , set(map(tuple,arr1)).difference(map(tuple,arr2))))
[[1,1],[1,5]]
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