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Thread: Random sequence

  1. #1
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    Default Random sequence

    Hi,

    I'm trying to create a random sequence of 100 numbers (min 1, max 100) and:

    -- Summarize them (number + number...)
    -- Count them
    -- Pick out the smallest number
    -- Pick out the highest number

    So far it only works WITHOUT randomly picked numbers. How can I make this random?:

    {
    		int start = 1, end = 100, step = 1;					
     
    		int element;		
    		long sum = 0;									
    		int count = 0, min = Integer.MAX_VALUE, max = Integer.MIN_VALUE;
     
    		for (int i = start; i <= end; i+=step)				
    		{													
    			element = i;									
    			sum += element;									
    			count++;										
    			min = Math.min(min, element);					
    			max = Math.max(max, element);				
    			System.out.printf("(%d/%d) ", i, element);		
    		}	
     
    		if (count == 0)									
    		{												
    			System.out.printf("Count:%,d, Sum:%,d, Min, Max not available", count, sum);
    		}
    		else
    		{
    			System.out.println();							
    			System.out.printf("Sum: %,d, Count: %,d, Min: %,d, Max: %,d ", sum, count, min, max);
    		}
    	}
     
    }

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Random sequence

    How can I make this random?
    There are a couple of ways to get random numbers:
    1) The Math class has a method that returns random numbers
    2) The Random class has methods for generating random numbers
    3) Fill a List with sequential numbers and use the Collections class's shuffle method. Guarantees no repeats
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
    Super Moderator Norm's Avatar
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    Default Re: Random sequence

    Also posted here: https://coderanch.com/t/731786/java/...quence#3404683

    Please read: http://www.javaprogrammingforums.com...s-posting.html
    If you don't understand my answer, don't ignore it, ask a question.

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