Hash table

[ruds]

hi,
I want to know how can i retrive a key from the given value from a
hash table?
suppose my table conatins:
KEY VALUE
1 3
2 10
3 12
4 15
if i have value 10 how do i get its corresponding key??

 

[Shane]

hi,
I want to know how can i retrive a key from the given value from a
hash table?
suppose my table conatins:
KEY VALUE
1 3
2 10
3 12
4 15
if i have value 10 how do i get its corresponding key??

The same way you knew where to insert the other values into your hash?

 

[Thomas Schodt]

hi,
I want to know how can I retrive a key from the given value from a
hash table?

suppose your table contains:
KEY VALUE
1 10
2 10
3 20
4 20
if you have value 10 which is its corresponding key?

 

[Mike Schilling]

hi,
I want to know how can i retrive a key from the given value from a
hash table?
suppose my table conatins:
KEY VALUE
1 3
2 10
3 12
4 15
if i have value 10 how do i get its corresponding key??

You can iterate throught the set of entries (Map.entrySet()), looking for a
match. Or, if the values are unique, you can create a second hash table
that reverses keys and values, and look it up directly.

 

[Roedy Green]

hi,
I want to know how can i retrive a key from the given value from a
hash table?
suppose my table conatins:
KEY VALUE
1 3
2 10
3 12
4 15
if i have value 10 how do i get its corresponding key??

see http://mindprod.com/jgloss/hashtable.html
http://mindprod.com/jgloss/hashmap.html

 

[Hendrik Maryns]

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Roedy Green schreef:
Jakarta Commons Collections defines the BidiMap interface and gives some
implementations.

I can provide you with a generified version if you wish.

H.
- --
Hendrik Maryns
http://tcl.sfs.uni-tuebingen.de/~hendrik/
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