Looking for text matching algorithm /patterns

[umen242]

Hello all
i have task to process many text files (already done ) and to look into each text file
few almost repetitive sentences that differs in 5 worlds from each other
my question is there any officiants method to search matching text
for example i have to match the this sentence with 3 variants marked here with
$$$$
"Hello my name is $$$$ and im working in $$$$ and i love to do $$$$"
Thanks

[oracleguy]

Look into using regular expressions.

[umen242]

Thanks for the fast reply , one more question if i may
is there any common way to convert very long strings to unique key name
i need it to store indications in set on every string that i already found

[oracleguy]

Originally Posted by umen242

Thanks for the fast reply , one more question if i may
is there any common way to convert very long strings to unique key name
i need it to store indications in set on every string that i already found

Do you want a unique constant length string to represent some arbitrary length string of data? If so look into hashing algorithms such as MD5 or SHA1.