Writing this sequence of numbers in code
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Thread: Writing this sequence of numbers in code

  1. #1
    Join Date
    Nov 2012
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    21

    Writing this sequence of numbers in code

    How can I write the list(or pattern like number) list into a loop or something equal to that in c++?

    1=3
    2=3
    3=3
    4=3
    5=6
    6=6
    7=6
    8=6
    9=9
    10=9
    11=9
    12=9
    13=12
    14=12
    15=12
    16=12
    17=15

    and so on..

    extra note: the left column is like the strlen of a string..I want the value on the left side compared to the string length. So if I have a string that is 14 characters long, I will get 12.
    Last edited by terryeverlast; May 10th, 2014 at 09:51 AM.

  2. #2
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    Re: Writing this sequence of numbers in code

    Quote Originally Posted by terryeverlast
    How can I write the list(or pattern like number) list into a loop or something equal to that in c++?
    What is the pattern involved? For example, at a glance it seems that the numbers on the left hand side of the '=' on each line are the natural numbers, counting from 1. The numbers of the right hand side appear to be multiples of 3, except that each multiple of 3 appears four times. From here, it should be possible to derive a function to make the numbers on the left hand side to the corresponding numbers on the right hand side, upon which this becomes a simple exercise of implementing it.

    Quote Originally Posted by terryeverlast
    the left column is like the strlen of a string..I want the value on the left side compared to the string length. So if I have a string that is 14 characters long, I will get 12.
    Sorry, but I don't follow. I don't see how a string of with a length of 14 corresponds to 12.
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  3. #3
    2kaud's Avatar
    2kaud is offline Super Moderator Power Poster
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    Re: Writing this sequence of numbers in code

    I don't really understand the question re string length, but this will produce the output as shown in post #1
    Code:
    #include <iostream>
    using namespace std;
    
    const int maxnum = 100;
    
    int main()
    {
    	for (int i = 1; i <= maxnum; ++i)
    		cout << i << "=" << (((i - 1) / 4) + 1) * 3 << endl;
    
    }
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