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;
}
}how to remove duplicate elements from char array in java
public static void main(String[] args) {
Main main = new Main();
char[] array = {'e','a','b','a','c','d','b','d','c','e'};
main.getCharArray(array);
}
private char[] getCharArray(char[] array) {
String _array = "";
for(int i = 0; i < array.length; i++) {
if(_array.indexOf(array[i]) == -1) // check if a char already exist, if not exist then return -1
_array = _array+array[i]; // add new char
}
return _array.toCharArray();
}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);Copyright © 2021 Codeinu
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