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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    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 08:51 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 online now 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;
    
    }
    All advice is offered in good faith only. You are ultimately responsible for the effects of your programs and the integrity of the machines they run on. This post is public domain as specified at https://creativecommons.org/publicdomain/zero/1.0/

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