A function to find the longest shared substring in a character vector.

sharedSubString(x, y = NULL)

## Arguments

x The character vector to process. Optionally, two single values can be specified. This is probably not useful to end users, but it's used by the function when it calls itself.

## Value

A vector of length one with either the longest substring that occurs in all values of the character vector, or NA if no overlap an be found.

## Examples


sharedSubString(c("t0_responseTime", "t1_responseTime", "t2_responseTime"));#> [1] "_responseTime"  ### Returns "_responseTime"