Explain the code snippet code

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Explain the code snippet code

HashMap<Character, Integer> mp = new HashMap<> ();
for (int j = 0; j<text.length (); j++) {
char ch = text.charAt(j);
if(mp.containsKey(ch)){
int cnt = mp.get(ch);
mp.put(ch, ++cnt);
}else{
mp.put(ch, 1);
}
}
Set<Character> charct =
map.keySet ();
for (Character ch: charct){
int c= mp.get(ch);
if(c>1){
System.out.println(ch+
}
" + c);
}
Transcribed Image Text:HashMap<Character, Integer> mp = new HashMap<> (); for (int j = 0; j<text.length (); j++) { char ch = text.charAt(j); if(mp.containsKey(ch)){ int cnt = mp.get(ch); mp.put(ch, ++cnt); }else{ mp.put(ch, 1); } } Set<Character> charct = map.keySet (); for (Character ch: charct){ int c= mp.get(ch); if(c>1){ System.out.println(ch+ } " + c); }
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