/Java/Java program to remove duplicate words in a string

Java program to remove duplicate words in a string

String fullString = "lol lol";
String[] words = fullString.split("\\W+");
StringBuilder stringBuilder = new StringBuilder();
Set<String> wordsHashSet = new HashSet<>();

for (String word : words) {
    if (wordsHashSet.contains(word.toLowerCase())) continue;
    wordsHashSet.add(word.toLowerCase());
    stringBuilder.append(word).append(" ");
}
String nonDuplicateString = stringBuilder.toString().trim();

Source: stackoverflow.com

String remove duplicate method in java

public static void main(String[] args) {

        String result = removeDup("AAABBBCCC");
        System.out.println(result); // ABC

public static  String  removeDup( String  str) {
        String result = "";
        for (int i = 0; i < str.length(); i++)
            if (!result.contains("" + str.charAt(i)))
                result += "" + str.charAt(i);
        return result;
    }
}

String remove duplicate in java

String str1 = "ABCDABCD";
String result1 = "";

for (int a = 0; a <= str1.length()-1; a++) {
if (result1.contains("" + str1.charAt(a))) { 
// charAt methodda you provide index number ve sana character olarak donuyor,
// If the string result does not contains str.CharAt(i), 
// then we concate it to the result. if it does we will not
   continue;
}
result1 += str1.charAt(a);
}
System.out.println(result1);

Similar codes

0 vote239 views1 answer
équivalent setTimeInterval java
Java
5 votes328 views3 answers
Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.19.1:test (default-test) on project
Java
1 vote260 views1 answer
How to truncate an array in java
Java
0 vote257 views1 answer
Java biginteger add
Java
0 vote239 views1 answer
Android autocompletetextview hashmap
Java
0 vote261 views1 answer
Fix all 'Implicit call to array '.toString() problems
Java
0 vote278 views1 answer
Como crear objeto java
Java
0 vote254 views5 answers
Comment in Java
Java
0 vote257 views1 answer
Where do you use overriding in framework
Java
2 votes204 views1 answer
Android studio start another activity
Java