This is simple problem based on problems 555, 801, 1118, etc.
Create an index vector from two input vectors.
Example:
input: [1 8 12] [4 5 9] output: [1 2 3 4 8 7 6 5 12 11 10 9]
Find relatively common elements in matrix rows
575 Solvers
901 Solvers
Get the length of a given vector
907 Solvers
Longest run of consecutive numbers
121 Solvers
Change the sign of even index entries of the reversed vector
191 Solvers