How would a programmer perform a range match when writing an application that takes into consideration different discount rates for customers? Give an example.
What will be an ideal response?
Create two corresponding arrays and perform a range match, in which you compare a value to the endpoints of numerical ranges to find the category in which a value belongs. For example, one array can hold the five discount rates, and the other array can hold five discount range limits. If you only use the first figure in each range, you can create an array that holds five low limits:
int[] discountRangeLimit= {1, 13, 50, 100, 200};
A parallel array can hold the five discount rates:
double[] discountRate = {0, 0.10, 0.14, 0.18, 0.20};
Then, starting at the last discountRangeLimit array element, for any numOfItems greater than or equal to discountRangeLimit[4], the appropriate discount is discount[4]. In other words, for any numOrdered less than discountRangeLimit[4], you should decrement the subscript and look in a lower range.
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Why can we write over the elements in array A on lines 8-11, without losing the values of the elements in array A?
``` 1 COUNTING-SORT( A ) 2 make an Array C of length k + 1 3 for each i, from 0 to k 4 C[ i ] = 0 5 for each j, from 0 to the length of A - 1 6 C[ A[ j ] ]++ 7 j = 0 8 for each i from 0 to k 9 for each m from 1 to C[ i ] 10 A[ j ] = i 11 j++ ``` A. By the time line 8 is reached, all of the information in array A is contained in array C. B. They are written in array A in such a way that we don’t write into an element of array A until it already has been written in a safe place of array A. C. Both A and B D. Neither A nor B
Peer-to-peer systems typically depend on untrusted and volatile computer systems for most of their resources. Trust is a social phenomenon with technical consequences. Volatility (i.e. unpredicatable availability) also is often due to human actions. Elaborate your answers to Exercise 10.4. by discussing the possible ways in which each of them is likely to differ according to the following attributes of the computers used: i) ownership ii) geographic location iii) network connectivity iv)country or legal jurisdiction What does this suggest about policies for the placement of data objects in a peer-to-peer storage service?
What will be an ideal response?
If a spreadsheet is well designed, a decision maker can use it to try different options using what-if analysis
Indicate whether the statement is true or false
The NIC's ____________________connector is a common failure point, so NICs that come with diagnostic software often include a special test called a loopback test.
Fill in the blank(s) with the appropriate word(s).