Hi Friend
Using HashMap in Java
***************************************
/*
*
input a character array from the user and output in the following way.
example string is amazon.. then output should be a2m1z1o1n1
*/
package questionaire;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Set;
import java.util.Map.Entry;
public class Amazon1 {
private String str;
private HashMap<Character, Integer> checkMap;
public Amazon1(String s) {
this.str = s;
checkMap = new HashMap<Character, Integer>();
}
public void checkTheFrequency() {
for (int i = 0; i < str.length(); i++) {
char key = str.charAt(i);
if (checkMap.containsKey(key)!=false) {
int value = checkMap.get(key);
checkMap.put(key, ++value);
} else {
checkMap.put(key, 1);
}
}
/*
* VVI
*/
Set<Entry<Character,Integer>> entry = checkMap.entrySet();
Iterator<Entry<Character,Integer>> iter = entry.iterator();
while(iter.hasNext())
{
Entry pair = iter.next();
System.out.print(" "+pair.getKey()+pair.getValue()+" ");
}
}
public static void main(String[] args) {
Amazon1 test = new Amazon1("amazon");
test.checkTheFrequency();
}
}
*******************
Correct me if I am wrong.
On Fri, May 14, 2010 at 3:30 PM, divya jain <[email protected]>wrote:
> use binary tree and insert in it every character u come across. if the
> character is already present then increment its count. use this approach if
> u r nt sure that characters will be only 26 or no.
> if u r sure there r 26 char then u cn use hash..
> plz correct me if i m wrong.
> thanks
>
>
> On 14 May 2010 08:50, sharad kumar <[email protected]> wrote:
>
>> cant u use a hash map ???? of O(K) where K is distinct elements in
>> string......
>>
>>
>> On Thu, May 13, 2010 at 8:13 PM, jalaj jaiswal <[email protected]
>> > wrote:
>>
>>> input a character array from the user and output in the following way.
>>> example string is amazon.. then output should be a2m1z1o1n1
>>>
>>> i did it taking a 26 size array... some better solution ??
>>>
>>>
>>> --
>>> With Regards,
>>> Jalaj Jaiswal
>>> +919026283397
>>> B.TECH IT
>>> IIIT ALLAHABAD
>>>
>>> --
>>> You received this message because you are subscribed to the Google Groups
>>> "Algorithm Geeks" group.
>>> To post to this group, send email to [email protected].
>>> To unsubscribe from this group, send email to
>>> [email protected]<algogeeks%[email protected]>
>>> .
>>> For more options, visit this group at
>>> http://groups.google.com/group/algogeeks?hl=en.
>>>
>>
>>
>>
>> --
>> yezhu malai vaasa venkataramana Govinda Govinda
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "Algorithm Geeks" group.
>> To post to this group, send email to [email protected].
>> To unsubscribe from this group, send email to
>> [email protected]<algogeeks%[email protected]>
>> .
>> For more options, visit this group at
>> http://groups.google.com/group/algogeeks?hl=en.
>>
>
> --
> You received this message because you are subscribed to the Google Groups
> "Algorithm Geeks" group.
> To post to this group, send email to [email protected].
> To unsubscribe from this group, send email to
> [email protected]<algogeeks%[email protected]>
> .
> For more options, visit this group at
> http://groups.google.com/group/algogeeks?hl=en.
>
--
You received this message because you are subscribed to the Google Groups
"Algorithm Geeks" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/algogeeks?hl=en.
