storing a set of integers in an array

[Khair Bahir]

Hello,

I'm trying to generate 50 random integers between 0 and 10 using a 'for' construct and the 'Math.random()' method. I know how to do this, but I don't know how to store all these integers in an array (one dimension). I really only know how to store integers by manually inputting them into the array. I haven't made much progress and could use some help.

This was my attempt (it doesn't work):

public static void main( String [] args )
	{
		int size = 50;
		int array[] = new int[ size ];

		for ( int j = 0; j < array.length; j++ )
		{
			array[j] = (int) Math.random()*11;
			System.out.println( array[j] );
		}
	} 

Thanks.

[Abhinav Kumar Mishra]

kae cee wrote:Hello,

I'm trying to generate 50 random integers between 0 and 10 using a 'for' construct and the 'Math.random()' method. I know how to do this, but I don't know how to store all these integers in an array (one dimension). I really only know how to store integers by manually inputting them into the array. I haven't made much progress and could use some help.

This was my attempt (it doesn't work):

public static void main( String [] args )
	{
		int size = 50;
		int array[] = new int[ size ];

		for ( int j = 0; j < array.length; j++ )
		{
			array[j] = (int) Math.random()*11;
			System.out.println( array[j] );
		}
	} 

Thanks.

hi

In the above code double value returned by random() function is converted into int before multiplication with 11.So we have to put the statement as
array[j]=(int)(Math.random()*11);

[Matthew Brown]

When you say "it doesn't work"...what does happen?

[fred rosenberger]

do you know your operator precedence? Specifically, which is higher - a cast, or multiplication?

[Khair Bahir]

Yeah, I know now that casts take higher precedence than multiplication operators, which is why the program just displayed a bunch of zeroes when I omitted a set of parentheses. Thanks for your guys' help.

[Pradeep allada]

have you tried instructions given by Mr. Abhinav Kumar Mishra,
check it once