Conditional statement with vectors

I have two vectors A (100 numbers) and B (500 numbers). For each element of A, I want to find the index (j) of element B such that: Bj-1 ≤ Ai ˂ Bj

Thanks in advance.

Answer 1

[John D'Errico]

help discretize

[Tchilabalo]

That works. Thanks very much.