How to get the character or characters of a string that repeated most number of times - Salesforce Globe For You
Solution:
Step 1: convert the given string in to an array which holds a single character in each index
Step 2:Prepare a map with Key as character and value as number of times it repeated by iterating the above array based on its size.
Step 3: Get the maximum count any character repeated most by iterating the above map.
Step 4:Iterate the map and get the characters by comparing each value of map with the maximum count calculated in the above step.
Sample Code:
Run the following sample code in developer console
String name ='Salesforce Globe For You';
Map<String,Integer> mapCharacter = new Map<String,Integer>();
//convert name to Character array
List<String> lstCharacter = name.split('');
for(integer i=0; i<lstCharacter.size(); i++) {
if(string.isNOTBLANK(lstCharacter[i])) {
String lowerCaseCharacter = lstCharacter[i].toLOWERCASE();
if(mapCharacter.containsKey(lowerCaseCharacter)) {
Integer count = mapCharacter.get(lowerCaseCharacter)+1;
mapCharacter.put(lowerCaseCharacter,count);
} else {
mapCharacter.put(lowerCaseCharacter,1);
}
}
}
//To get the maximum number of times a character repeated
String mostRepeatedCharacter ='';
integer charMaxRepeatedcount = 0;
for(String s:mapCharacter.keyset()) {
If(mapCharacter.get(s) > charMaxRepeatedcount) {
charMaxRepeatedcount = mapCharacter.get(s);
}
}
// To get Character that repeated most
for(String s:mapCharacter.keyset()) {
If(mapCharacter.get(s) == charMaxRepeatedcount) {
if(mostRepeatedCharacter =='') {
mostRepeatedCharacter = s;
} else {
mostRepeatedCharacter = mostRepeatedCharacter+', '+s;
}
}
}
system.debug('Most Repeating Character or Characters in given String : '+mostRepeatedCharacter);
Output:
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