Loop inside Loop in Java (simple)

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I am doing an exercise where I have to print 'x' (is an input) rows of numbers incrementing from 0 to 10. If I input 3, the output should look like this

012 345 678

012 345 678

012 345 678

but instead, I get 3 rows of a 0 to 10 count. I know it might be easy to code, but I am stuck in that! I think I am not undestanding well the nested loops :(

public class quadrats {

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        int q = in.nextInt();

        for (int j = 0; j < q; j++) {
            for (int i = 0; i <= 10; i++) {
                System.out.print(i);
            } 
            System.out.println();
        } 
    }

}

Print X quandrants of X rows and X columns each

Scanner in = new Scanner(System.in);
int q = in.nextInt();

// q quadrants
for (int iQuadrat = 0; iQuadrat < q; iQuadrat++) {

    // count will keep track of the last number you print
    int count = 0;
    // q rows
    for (int iRow = 0; iRow < q; iRow++) {
        // q cols
        for (int iCol = 0; iCol < q; iCol++) {
            System.out.print(count);
            // increment the count and take its modulo 10 so it stays between 0 and 9
            count = (count+1)%10;
        }
        // line return at the end of the row
        System.out.println();
    }
    // line return between quadrants
    System.out.println();
}

For an input of 12, it will print 12 times this quadrant

012345678901
234567890123
456789012345
678901234567
890123456789
012345678901
234567890123
456789012345
678901234567
890123456789
012345678901
234567890123

Nested Loop in Java (With Examples), Nested loop means a loop statement inside another loop statement. That is why nested loops are also called as “loop inside loop“. Syntax for Nested Do-While loop: do{ do{ // statement of inside loop }while(condition); // statement of outer loop }while(condition); There are three types of for loops in java. Simple For Loop; For-each or Enhanced For Loop; Labeled For Loop; Java Simple For Loop. A simple for loop is the same as C/C++. We can initialize the variable, check condition and increment/decrement value. It consists of four parts:

You don't need two loops for this. All you need is to print a newline after every 3rd letter and an extra newline after every 3rd line. Your code can be like:

public class quadrats {

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        int q = in.nextInt();
        int lines = 0;
        int letters = 0;
        while (lines < q) {
            System.out.print(i);

            if (letters && letters % q == 0) {
                System.out.println();
                lines++;
            }
            if (lines && lines % q == 0) {
                System.out.println();
                letters = 0;
                continue;
            }
            letters++;
        }
}

PS: I haven't tried this code myself. But concept would be the same.

Java Nested Loops with Examples, For example, when you are working with single-dimensional Array, you can use Java For Loop to iterate from starting to array end. However, to work with Two� @SebastianH String a ="foo" here "foo" is a string literal and stored in java string pool. if you try to assign same literal into another reference, it will get same reference from string pool. but new string(..) returns a object of string type – java seeker Feb 18 '14 at 17:27

The answer above should solve your problem so I will try to explain what your code does.

Let's start with code inside first for loop:

for (int i = 0; i <= 10; i++) {
   System.out.print(i);
} 
System.out.println();

First we have a loop iterating through numbers from 0 to 10 and the output is:

012345678910

and a new line after that.

That means that output of your program will print above mentioned output q times.

012345678910

012345678910

012345678910

Nested For Loop in Java, If we have a for loop inside the another loop, it is known as nested for loop. The inner loop executes completely whenever outer loop executes. Example: public� for (int i = 1; i <= 5; ++i) { // codes inside the body of outer loop for (int j = 1; j <=2; ++j) { // codes inside the body of both outer and inner loop } // codes inside the body of outer loop } Here, a for loop is inside the body another for loop. It should be noted that you can put one type of loop inside the body of another type. For example, you can put a while loop inside the body of a for loop.

You can try with below code

public class quadrats {

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        int q = in.nextInt();

        for (int j = 0; j < q; j++) {
            for (int i = 0; i < 9; i++) {
                if(i%3 == 0)
                   System.out.println();
                System.out.print(i);
            } 
            System.out.println();
        } 
    }
}

Loops in Java, A nested loop is any loop statement inside the body of another loop statement. The nested Duration: 2:38 Posted: Oct 6, 2017 Edit : The following version of while gets stuck into an infinite loop as obvious but issues no compiler errors for the statement below it even though the if condition within the loop is always false and consequently, the loop can never return and can be determined by the compiler at the compile-time itself.

Java Nested Loops by Example using a For Loop - Java , Nested loops in java are just a for loop inside a for loop. A common way to use nested loops Duration: 10:02 Posted: Nov 15, 2018 Simple Java While Loop Examples. A simple while loop example given below contains the while loop with the condition. The condition given in the while loop will execute the code inside the while loop for 10 times. I am using the while loop here to print the numbers from 0 to 9. For this, I have initialized the variable i with 0.

Nested Loops in Java, A nested loop is a (inner) loop that appears in the loop body of another (outer) loop. The inner or outer loop can be any type: while, do while, or for. For example � Java while loop is a control flow statement that allows code to be executed repeatedly based on a given Boolean condition. The while loop can be thought of as a repeating if statement. The while loop can be thought of as a repeating if statement.

Incremental Java Nested Loops, Examples of Nested Loops. Let's take a look at how this will work in the Java language. Let's Duration: 5:22 Posted: Dec 5, 2017 while Loop in java Syntax. Here, statement (s) may be a single statement or a block of statements. The condition may be any expression, and Flow Diagram. Here, key point of the while loop is that the loop might not ever run. When the expression is tested and Example.

Comments
  • You say in your example it should be numbers 0 to 10 on 3 lines but you only have numbers from 0 to 8 in your output. To clarify, can you write the expected outputs for 4, and for 6? AN possibly rephrase your problem so it makes more sense Becuse