How do I remove unique characters in a string?

How do I remove unique characters in a string?

1) By using for loop

1. In the first step, we have to convert the string into a character array.
2. Calculate the size of the array.
3. Call removeDuplicates() method by passing the character array and the length.
4. Traverse all the characters present in the character array.
5. Check whether the str[i] is present before or not.

How do I remove a specific letter from a string?

How to remove a particular character from a string ?

1. public class RemoveChar {
2. public static void main(String[] args) {
3. String str = “India is my country”;
4. System.out.println(charRemoveAt(str, 7));
5. }
6. public static String charRemoveAt(String str, int p) {
7. return str.substring(0, p) + str.substring(p + 1);
8. }

How do you remove special and junk characters from a string?

Example of removing special characters using replaceAll() method

1. public class RemoveSpecialCharacterExample1.
2. {
3. public static void main(String args[])
4. {
5. String str= “This#string%contains^special*characters&.”;
6. str = str.replaceAll(“[^a-zA-Z0-9]”, ” “);
7. System.out.println(str);
8. }

How do I remove all special characters from a string in Python?

Remove Special Characters From the String in Python

1. Remove Special Characters From the String in Python Using the str.isalnum() Method.
2. Remove Special Characters From the String in Python Using filter(str.isalnum, string) Method.
3. Remove Special Characters From the String in Python Using Regular Expression.

How do I remove a character from a string in Java?

The idea is to use the deleteCharAt() method of StringBuilder class to remove first and the last character of a string. The deleteCharAt() method accepts a parameter as an index of the character you want to remove.

How do you find consecutive characters in a string?

Logic : Match the characters in a String with the previous character.

1. If you find string[i]==string[i-1]. Break the loop. Choose the next string.
2. If you have reached till the end of the string with no match having continuous repeated character, then print the string.