reportRunningSum

Category: Token-Based File Processing

Author: Stuart Reges

Book Chapter: 6.2

Problem: reportRunningSum

  Write a static method called
   reportRunningSum that takes as a parameter a Scanner holding a sequence of
   real numbers and that prints to System.out the running sum of the numbers
   followed by the maximum running sum.  In other words, the n-th number that
   you report should be the sum of the first n numbers in the Scanner and the
   maximum that you report should be the largest such value that you report.
   For example if the Scanner contains the following data:

        3.25 4.5 -8.25 7.25 3.5 4.25 -6.5 5.25

   your method should produce the following output:

        running sum = 3.25 7.75 -0.5 6.75 10.25 14.5 8.0 13.25
        max sum = 14.5

   The first number reported is the same as the first number in the Scanner
   (3.25).  The second number reported is the sum of the first two numbers in
   the Scanner (3.25 + 4.5).  The third number reported is the sum of the first
   three numbers in the Scanner (3.25 + 4.5 + -8.25).  And so on.  The maximum
   of these values is 14.5, which is reported on the second line of output.
   You are to exactly reproduce the format of this output.  You may assume that
   there is at least one number to read.