Shell Programming and Scripting

variable1="A|B|C|E"
variable2="A|B|C|D|F"

#!/bin/bash

variable1="A|B|C|E"
variable2="A|B|C|D|F"

for v1 in ${variable1//\|/ }
do
        for v2 in ${variable2//\|/ }
        do
                if [ "$v1" == "$v2" ]
                then
                        if [ -z "$variable3" ]
                        then
                                variable3="$v1"
                        else
                                variable3="${variable3}|${v1}"
                        fi
                fi
        done
done

echo "$variable3"

A|B|C
A|C|E

a="A|B|C|D|E|F|G"
b="A|B|C|D|Ea"
s=''
for i in range(max(len(b),len(a))):
 try:
  if a[i]==b[i]: s+=a[i]
 except:
  break
print(s)