/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 vote171 views1 answer
How todo a timeout test java
Java
0 vote219 views1 answer
System out java quick
Java
1 vote180 views1 answer
How to create new frame with java swing
Java
5 votes194 views2 answers
Android get screen width and height
Java
0 vote194 views1 answer
Assign a random number in a set without replacement javva
Java
-1 vote163 views6 answers
What is java
Java
2 votes167 views1 answer
Java resize image
Java
0 vote293 views1 answer
GetObject method jdbc
Java
1 vote176 views1 answer
React-native force rtl on android
Java
8 votes226 views4 answers
Get type of variable java
Java