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Thread: Functions, real numbers and for loops

  1. #1
    Junior Member
    Join Date
    Oct 2011
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    Question Functions, real numbers and for loops

    Hi, I have this Java problem and I don't completely understand what it means, this is the problem:

    Write a function named sumTo() that takes an integer parameter n and that returns the sum of the first n reciprocals. In other words:

    sumTo(n) returns (1 + 1/2 + 1/3 + 1/4 + ... + 1/n)

    (of course, 1/2 in this case means .5) For example, sumTo(2) should return the value 1.5 (1 + 1/2). If sumTo() is passed the value 0, it should return 0.0 as its result. You may assume that sumTo() is never passed a negative value.


  2. #2
    Join Date
    Jun 2011
    Thanked 7 Times in 6 Posts

    Default Re: Functions, real numbers and for loops

    Learn how to use loops.
    Also note that
    1 + 1/2 + 1/3 + 1/4 + .... = 1/1 + 1/2 + 1/3 + ... = sum(1/i, for i = 1 to n)
    Your mission is to write the last expression in for loops which should be pretty easy.
    Last edited by dabdi; October 15th, 2011 at 07:14 AM.

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