I got two arrays how to search and match them???????

Hi experts plz help me out~
i got two arrays one contains students id
and the other one contains students id and marks
i have to compare these two, match id, and store value next to that students.
but how to match these two
one file:
213 John
356 Chris
421 Paul
the other file
356 55
421 67
213 69
and so on
i have to search both and matching IDs and store marks for them
i ve done string tokenizing part only.................
help me~~~~~~~~~~~~~

You can read each file into a Map and have the student ID as a key, then you can iterate over the student map keyset and find marks for each key.
Mike

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