I finish the part of finding the char at the position my homework required, but how to delete the character from a String that I found?

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removeNchars takes a String, an int and a char and returns a String: The output string is the same as the input string except that the first n occurrences of the input char are removed from the string, where n represents the input integer. If there are not n occurrences of the input character, then all occurrences of the character are removed. Do not use arrays to solve this problem.

HW2.removeNchars("Hello there!", 2, 'e') "Hllo thre!"

HW2.removeNchars("Hello there!", 10, 'e') "Hllo thr!"

HW2.removeNchars("Hello there!", 1, 'h') "Hello tere!"

public class HW2{   
    public static String removeNchars(String s, int a, char b){
       StringBuilder s = new StringBuilder();
       for(int i = 0; i<s.length(); i++){
           if(int i=a&& s.charAr(i)==b){
           }          
       }              
    }

}

there is more than 1 way to do it. I can see you used StringBuilder so try this

the idea is to define string builder

StringBuilder sb = new StringBuilder(inputString);

use deleteCharAt() to delete the char you don't want(docs).

and convert it back to string

String resultString = sb.toString();

good luck

Edit:

You can also create a new StringBuilder(exmple name output) then iterate the src string and append the chars you don't want to remove to the output string with .append(input);

something like this:

 StringBuilder output = new StringBuilder();
 output.append(char);

and return the output string after you finish iterating.

Python Remove Character from String, How do I extract a character from a string in Java? Thanks. I will try this first thing in the morning and see if my compiler likes it. The DB-NAME field on each record in my file can have up to 200 characters. So, I guess I'll need to search starting at the first character of the DB-NAME field and increment the starting position in the DB-NAME by 1 until the end of that string.


I don't know why you are using the StringBuilder class,but as you stated above i think this will help you with your homework,lets see if it works for you.

public static String removeNchars(String s, int a, char b){
       String str = "";
           for(int i = 0; i < s.length(); i++){
                if(a > 0 && s.charAt(i) == b)
                  {
                       a--;
                  }else 
                  {
                      str += s.charAt(i);
                  }

      }
      return str;

}

How To Count Occurrences Of Each Character In String In Java, How do I remove a single character from a string in Python? Macro Example to Replace Character in String by Position. The following macro replaces the string starting in position 10 (myCharacterPosition) with a length of 1 character (myCharactersToReplace) with the string “+” (myReplacementString) within the string in cell A11 of the worksheet named “Excel VBA Replace” (myCell).


You can use s.deleteCharAt(); like this:

public class HW2{   
    public static String removeNchars(String s, int a, char b){
        StringBuilder s = new StringBuilder();
        for(int i = 0; i<s.length(); i++){
            if(int i=a&& s.charAr(i)==b)
                s.deleteCharAt(i);
        }
    }
}

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