Write Java program to count Character Occurrences in given string

Learn Java Program -input -aabbbc / Ouput - a2b3c1

[dipaksahane]

Great explanation... Pls provide more interview program thanks madam🙏

[Sandeepreddy]

good teacing all the best for birght future

[neelimajaiswal]

Maam in line no 29, if we remove the space or double quotation..then why it is giving us output as integer values?

[amanchaudhary]

please explain in reverse of i/p - a2b3c1 O/P- aabbbc

[rachamallidorasrivignesh]

The way of explanation is really so good madam could u make vedeos on java interview qusstikns to crack the interview please make it madam.

[vijaykumar-utze]

hash map does not follow the insertion order right?

[rakhamajighagare]

Input is String str="AAAABBBCCA" output : A=4 B=3 C=2 A=1 (Ask this program recent interview) pls provide solution

[shivarajyadachi]

public class Test {

public static void main(String[] args) {
String s ="ABBCCCDDDD";
int n = s.length();
// A1B2C3D4
int count=1;
Map<Character, Integer> map = new LinkedHashMap<Character, Integer>();

for(int i=0 ; i<n ; i++)
{
char ch =s.charAt(i);
if(!map.containsKey(ch))
{
map.put(ch, count);
}else
{
map.put(ch, map.get(ch)+1);
}
}

for(char z : map.keySet())
{
if(z>1)
{

}
}

}

}

[tmsdeepak]

This solution will not work if we have repeating characters ex: aabbcccaadd -> a2b2c3a2d2. But great explnation