Check if the multiple 1x2 arrays contained within a 4x2 array exist within a larger 10x2 array

4x2 array a1 below. 10x2 array b1 below. I want to know if the 4 1x2 arrays [1;5], [5;4], [4;7], and [3;1] all exist in b1, irregardless of the order.

The code below is an example of code that should work.

a1= [1, 5, 4, 3; 3, 4, 7, 1]

a1 = 2×4

1 5 4 3 3 4 7 1

b1= [5,4,1,3,7,1,9,5,8,3; 4,7,3,1,5,6,3,9,5,3]

b1 = 2×10

5 4 1 3 7 1 9 5 8 3 4 7 3 1 5 6 3 9 5 3

Answer 1

[Dyuman Joshi]

a1 = [1, 5, 4, 3; 3, 4, 7, 1]

a1 = 2×4

1 5 4 3 3 4 7 1

b1 = [5,4,1,3,7,1,9,5,8,3; 4,7,3,1,5,6,3,9,5,3]

b1 = 2×10

5 4 1 3 7 1 9 5 8 3 4 7 3 1 5 6 3 9 5 3

[out, idx] = ismember(a1.', b1.', 'rows')

out = 4×1 logical array
   1
   1
   1
   1

idx = 4×1

3 1 2 4