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how to find unique characters in a string in java

Obedient Ocelot answered on January 14, 2021 Popularity 10/10 Helpfulness 4/10

answer how to find unique characters in a string in java

how to find unique characters in a string in java

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//  I would use linkedHashMap since it doesn't accept
//  duplicate values

String str = "abbcdddefffggghjilll";
        String [] arr = str.split("");
        Map<String, Integer> mapStr = new LinkedHashMap<>();

        for (int i=0 ; i < arr.length ; i++){
            if (!mapStr.containsKey(arr[i])){
                mapStr.put(arr[i],1);
            } else{
                mapStr.put(arr[i],mapStr.get(arr[i])+1);
            }
        }

        for (Map.Entry<String,Integer> map : mapStr.entrySet()) {
            if(map.getValue()==1) {
                System.out.print(map.getKey());
            }
        }

Popularity 10/10 Helpfulness 4/10 Language java

Source: Grepper

Tags: find java string unique

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Contributed on Jan 14 2021

Obedient Ocelot

0 Answers Avg Quality 2/10

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how to find unique characters in a string in java

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