/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

-1 vote174 views2 answers
Plugin with id 'com.android.application' not found.
Java
2 votes133 views1 answer
Printing a treeset java
Java
10 votes185 views3 answers
Substring in java
Java
0 vote154 views1 answer
BufferredReader Class
Java
0 vote166 views1 answer
What happens if you return only -1 and 1bute not 0 java
Java
37 votes191 views1 answer
Java hashmap entryset
Java
0 vote172 views1 answer
How to divide a double in java
Java
0 vote170 views1 answer
Log10 in java
Java
50 votes177 views2 answers
Find number of weeks between two dates in java
Java
0 vote175 views1 answer
Java pause program until key pressed
Java