CODEWITHSUNDEEP
java
user5438107
user5438107

Reputation:

how can I use the for loop in java to print out the word chicken in a triangle shape?

Implement the printTriangle method so that it prints a triangle out of the letters in parameter str. For example, if str is Chicken then your method should print the following

C
Ch
Chi
Chic
Chick
Chicke
Chicken

Also What if I wanted it to go from the full word chicken to c and also a different one that starts with the last letter and builds up to the whole word? 

public class Triangle {

    public void printTriangle(String str) {


        for (int x = 1; x < str.length(); x++){

        }

       for ( int y = 0 ; y <  ; y ++ ){
           System.out.print(str.substring(y))

            System.out.println( );

    }
this is what I have :(
    //should look like a triangle

Upvotes: 0

Views: 1938

Answers (4)

Mateusz Korwel
Mateusz Korwel

Reputation: 1148

Something like this should work.

String str = "Chicken";
for(int y = 1; y <= str.length(); y++) {
    System.out.println(str.substring(0, y));
}

C
Ch
Chi
Chic
Chick
Chicke
Chicken

And other combination:

String str = "Chicken";
for(int y = 0; y < str.length(); y++) {
    System.out.println(str.substring(y));
}

Chicken
hicken
icken
cken
ken
en
n 

String str = "Chicken";
for(int y = str.length() - 1; y >=  0 ; y--) {
    System.out.println(str.substring(y));
}

n
en
ken
cken
icken
hicken
Chicken

Upvotes: 0

Lencalot
Lencalot

Reputation: 395

This Is what you are looking for. Ignoring syntax error in your code, the problem is you are doing substring of a string, so when you start with Chicken, and you are getting a substring of say... 0(the start) you are getting Chicken, at substring 1, you are getting hicken. You can do what you are trying to do using my following example. 

public static void printTriangle(String str) {

    String temp = "";

    for (int x = 0; x < str.length(); x++){
        temp += str.charAt(x);
        System.out.println(temp);

    }
}

Upvotes: 0

Luca Vinciguerra
Luca Vinciguerra

Reputation: 37

I tried some things for this but my best method was this:

    public static void printOutWordAsTriangle(String word) { //Supply a String as the word to print
    int currentLetter = 0; //The amount of letters which are printed per line. 0,1,2... (So it looks like a triangle)
    char[] letters = word.toCharArray(); //Split the string into a char Array
    while (currentLetter < letters.length) { //Print every line
        String toPrint = "";
        int i = 0;
        for (char c : letters) { //Print all characters needed for the word-part of the line
            if (i <= currentLetter) { // check if the character belongs to it
                toPrint = toPrint + String.valueOf(c);
            }
            i++;
        }
        System.out.println(toPrint); // Print the line
        currentLetter++;
    }
}

Now, you can use this method. You just need to supply a String. Example:

printOutWordAsTriangle("WeLoveChicken");

Note: This will only print out the word in one direction. To the second, I am confident that you can do it.

Upvotes: 0

Szil&#225;rd N&#233;meth
Szil&#225;rd N&#233;meth

Reputation: 359

Try this one:

    public class Triangle {

        public void printTriangle(String input) {
            for(int i = 0; i < input.length(); ++i) {
                System.out.println(input.substring(0, i + 1));
            }
        }

        public static void main(String[] args) {
            new Triangle().printTriangle("Chicken");
        }

    }

Upvotes: 1

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