Question

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Can I sort two lists in relation to each other?

I have a Sorting Scenario, I didnt know how to acheive it?
Two Collections

List<<String>String> Key, List<<String>String> Value
I have to sort the value from a-z and such that the key for the corresponding value should not be change.

>>eg: Key and Value  
    2=>two  
    100=>four  
    1=>five  
    0=>nine  
    3=>eight  
    8=>one

>>after Sorting:
    3=>eight  
    1=>five  
    100=>four  
    0=>nine
    8=>one
    2=>two

Any one please Help me?

Answer 1

Using a treemap with text as key (“two”, “four”), we can order alphabetically and later retrieve the two lists again:

// Key contains ("2", "100", "1", ...)
// Value contains ("two", "four", "five", ...)
SortedMap<String, String> result = new TreeMap<String, String>();

// assuming the same size for both lists
for (int i = 0; i < Key.size(); i++) {
    // when adding to TreeMap, keys are ordered automatically
    result.put(Value.get(i), Key.get(i));
}

List<String> orderedKey = new ArrayList<String>(result.keySet());
List<String> orderedValue = new ArrayList<String>(result.values());

Hope this helps.