I hope I can explain my problem. I have 4 different arrays with numeric values (3, 7, 63 etc), but of course I could merge them into one. I need to check which values are present in each array (which values have 4 duplicates). I want to keep an array with all of the values that meet this requirement without duplicates.
I have found some ways to compare arrays, but I’m struggling with the fact that I have 4 arrays and that I’m not looking for ‘double’ duplicates but for ‘quadruple’ duplicates.
Who can send me in the right direction? Thanks!