Results 1 to 6 of 6
Thread: Java random numbers in an array!
 09122012, 06:01 AM #1Member
 Join Date
 Dec 2011
 Posts
 28
 Rep Power
 0
Java random numbers in an array!
I have to initialized a 6 row by 6 column array. And am trying to add ten 5's in the array. And then print it but it wont work. I tried for 2 hours cant help it, can anyone please help me!
Thank you forum!
Java Code:package HW7_5_3; import java.util.Scanner; import java.lang.Math; public class Task5review { public static void main(String[] args) { int array1[][] = new int [6][6]; int num; int count=0; if(count<10) { for(int i=0;i<6;i++) { for(int k=0;k<6;k++) { num=(int)(Math.random()*(21)+2); if (num==1&&count<10) { array1[i][k]=5; count++; } if (num==2) { array1[i][k]=0; } } } } for(int i=0;i<6;i++) { for(int k=0;k<6;k++) { System.out.print(array1[i][k]+" "); } System.out.println(""); } } }
 09122012, 06:16 AM #2Member
 Join Date
 Dec 2011
 Posts
 28
 Rep Power
 0
Re: Java random numbers in an array!
Sorry nvm i got it thenk you for who ever looked at it this is the solution
Java Code:package HW7_5_3; import java.util.Scanner; import java.lang.Math; public class Task5review { public static void main(String[] args) { int array1[][] = new int [6][6]; int num; int count=0; if(count<10) { for(int i=0;i<6;i++) { for(int k=0;k<6;k++) { num=(int)(Math.random()*(21+1)+1); if (num==1&&count<10) { array1[i][k]=5; count++; } if (num==2) { array1[i][k]=0; } } } } for(int i=0;i<6;i++) { for(int k=0;k<6;k++) { System.out.print(array1[i][k]+" "); } System.out.println(""); } } }
 09122012, 07:04 AM #3
Re: Java random numbers in an array!
It is recommended to use appropriate methods of java.util,.Random instead of Math#random()
dbIf you're forever cleaning cobwebs, it's time to get rid of the spiders.
 09122012, 09:44 AM #4
 Join Date
 Sep 2008
 Location
 Voorschoten, the Netherlands
 Posts
 13,820
 Blog Entries
 7
 Rep Power
 21
Re: Java random numbers in an array!
That algorithm doesn't always produce ten '5's at random positions in your two dimensional array.
kind regards,
Joscenosillicaphobia: the fear for an empty beer glass
 09132012, 06:39 AM #5Member
 Join Date
 Dec 2011
 Posts
 28
 Rep Power
 0
 09132012, 08:25 AM #6
Similar Threads

Lottery  NonRepeating Random Numbers from Array
By adize in forum New To JavaReplies: 4Last Post: 01272012, 12:18 PM 
I need help generating random numbers for a fill array
By william979 in forum New To JavaReplies: 15Last Post: 05042011, 12:57 AM 
Array of random numbers ...
By shane1987 in forum New To JavaReplies: 31Last Post: 11142010, 10:33 PM 
Store Random numbers into Array
By abby0910 in forum New To JavaReplies: 19Last Post: 07122010, 12:59 AM 
generating random numbers in a 5x5 array.
By acidacid in forum New To JavaReplies: 3Last Post: 08142007, 03:44 AM
Bookmarks