Print a variable a n number of times in java

Question

My project is to show lines with cardinals, from an initial number and then varying this number to another number entered. It starts by asking for a initial number of cardinals (the output must be "###" the number of times asked) and then ask for the final number of cardinals to add. So case, click here 5 initial cardinals and add 3, the program must show a line with 5, another with 6, another with 7 and another with 8 cardinals. How do I add the cardinals? With if-else?

import java.util.Scanner;

public class P02Cardinais {

    public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);
        System.out.println("Enter the number inicial of cardinals: ");
        int numCardinais = keyboard.nextInt();  
        System.out.println("Enter the number of cardinals to add: ");
        int numCardinaisAdd = keyboard.nextInt();

        int i;
        for (i = 0; i < numCardinais; i++) {
            System.out.print("#");
        } System.out.print(" - " + numCardinais);

        keyboard.close();
    }
}

Example of the output

(number inicial - 2 ; number to add - 3)
## - 2
### - 3
#### - 4
##### - 5

so the example output given here is the expected output or it is the generated output? — Razib, Mar 07 '18 at 16:14
is only a example. the output depends of the numbers introduced — , Mar 07 '18 at 16:15
do it one step at a time. Start writing the code that prints the initial string. You can then try to find an efficient way to add the other characters. You can start from: https://stackoverflow.com/questions/1235179/simple-way-to-repeat-a-string-in-java — Marco Altieri, Mar 07 '18 at 16:18
That prints the number inicial of cardinals... How do I add successively the other number introduced? — , Mar 07 '18 at 16:22

azro · Accepted Answer · 2018-03-10T17:32:10.010

1

You need 2 loops

one for the number of lines from initial to initial+add
one for the number of # which has to be the index of first loop (limo of j is i)

for (int i = numCardinais; i <= numCardinais+numCardinaisAdd; i++) {
    for (int j = 0; j<i; j++) {
        System.out.print("#");
    } 
    System.out.println(" - " + i); // new line and index
}

edited Mar 10 '18 at 17:32

answered Mar 07 '18 at 16:18

azro

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Print a variable a n number of times in java

1 Answers1