Queue Lab

The store manager decided to giveaway "Giants" and "Jets" t$-$shirts to their customers since they were shutting down the business. People supporting their team had to carry a sign that says whether they are "Giants" fan of "Jets". Store manager has no other employee to help him out and had all the t$-$shirts piled up in one single pile. So he came up with his own rule. The rule is simple: If customer in a queue is carrying sign that says "Giant" AND $t-$shirt on the pile is "Giants" $t-$shirt $($or if customer in a queue is carrying sign that says "Jets" AND $t-$shirt on the pile is "Jets" $t-$shirt$)$ then customer takes the $t-$shirt and leave the queue otherwise customer joins back queue at the end of the line. This continues until none of the queue customer want to take the top $t-$shirt or there are no more t$-$shirts left. You need to design you program to find out how many customer will end up getting no $t-$shirts.

Example Input and output:

Input$($two arrays of String$)$: $,$ customers $=[G,G,J,J],t-$shirts $=[J,G,J,G]$

Output$($integer$)$ :$0$

Step by step process for sample input$/$output:

$\backslash$table$[[$Operation$,\backslash$table$[[$t$-$shirt$],[($front$,....,$end$)]],\backslash$table$[[$Customer$],[($front$,.....,$end$)]],$Explanation$],[\backslash$table$[[$compare$],[$new state$]],\backslash$table$[[J,G,J,G$