Delete a letter (Editorial)

Delete a letter#8985

In this problem you must delete all lowercase Latin letters ' $a$ ' from the given string.

Algorithm implementation

Read the input string.

getline(cin, s);

Add characters that are not ' $a$ ' to the resulting string $r es$ .

for (i = 0; i < s.length(); i++)
  if (s[i] != 'a') res.push_back(s[i]);

Print the answer.

cout << res;

Java implementation

import java.util.*;

public class Main
{
  public static void main(String[] args)
  {
    Scanner con = new Scanner(System.in);
    String s = con.nextLine();

    String res = "";
    for(int i = 0; i < s.length(); i++)
      if (s.charAt(i) != 'a') res = res + s.charAt(i); 

    System.out.printf(res);
    con.close();
  }
}

Java

Java implementation — replace

import java.util.*;

public class Main
{
  public static void main(String[] args)
  {
    Scanner con = new Scanner(System.in);
    String s = con.nextLine();
    s = s.replace("a", "");
    System.out.printf(s);
    con.close();
  }
}

Java

Python implementation

Read the input string.

s = input()

To remove all letters ' $a$ ' from the string, use the replace() method. It creates a new string by replacing all occurrences of the specified substring with another substring.

r e pl a ce (o l d, n e w)

replace(old, new)

$o l d$ : The substring to be replaced.
$n e w$ : The substring to replace it with.

print(s.replace('a', ''))