CODEWITHSUNDEEP
java
user1184574
user1184574

Reputation: 21

Setting a String Equal to a Method

I am very new to Java and am in a Java intro class so I apologize if this question is offensively simple but I am wondering if it is possible to set a string equal to a method. I guess I already know the answer is no because Netbeans is throwing an error but I just don't know another way to program this question:

"Create a new string called passwd formed by concatenating every alternate non-space character in sentence ('sentence' is a string she had us create earlier in the assignment) starting with the first. To do this, you need to a loop to go through the string sentence and retrieve characters from alternate index positions. If the extracted alternate character is NOT a space, then add it to the new String. Do not include spaces."

With my limited Java knowledge all I can think to do is to set a new string equal to a "for" method, but apparently this isn't allowed. How would I do this?

Upvotes: 0

Views: 343

Answers (5)

npinti
npinti

Reputation: 52185

To do what you are required, you will need to initialize the string to the sentence you want to process, the, loop for the length of the string using the .charAt() method and see if the Character is a space. To do this, you can use the Character.isWhiteSpace(). If the character is not a space, you can append it to a StringBuilder.

Upvotes: 2

Joonas Pulakka
Joonas Pulakka

Reputation: 36577

Even if it would be possible to somehow set a string equal to a "for" method (actually for is a statement, not a method), what would the string contain then? "For"? That's certainly not what you want.

you need to a loop to go through the string sentence

So create a (for) loop.

retrieve characters from alternate index positions

See String.charAt().

If the extracted alternate character is NOT a space, then add it to the new String.

Learn how if works. Character.isWhitespace() method might be useful.

Upvotes: 0

vulkanino
vulkanino

Reputation: 9134

In the assignment text there's everything you need to do. Even if you don't know Java, you can write down an informal algorthim:

  1. Declare and initialize a new string, possibly the same size of the source string. In Java you could use a StringBuffer to speed up the copy
  2. Cycle for each char in the source string.In Java you have charAt().
  3. Is it a space? If yes, then continue the loop. I Java you have isSpace().
  4. If it is not a space, then append this char to the new string. In Java you have the append method of a String or a StringBuffer

Upvotes: 0

tartak
tartak

Reputation: 485

public String result() {
  String result = "";
  for (char c : log.toCharArray()) {
    if (!" ".equals(c)) {
      result += c;
    }
  }
  return result;
}

Upvotes: -1

anubhava
anubhava

Reputation: 785156

You can use this code (assuming string is your original string):

StringBuffer passwd = new StringBuffer();
for (int i=0; i<string.length(); i+=2) {
    if (string.charAt(i) != ' ')
        passwd.append(string.charAt(i));
}
System.out.printf("passwd is: [%s]%n", passwd.toString());

Upvotes: 0

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