– int[] exponent = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
int[] powers = new int[10];
for (int i = 0; int < 10; i++){
power [i] = math.pow(2, exponent[i])
} ;
Archive for February, 2008
9.7
1. A table of numbers, can be implemented as a two-dimensional array.2. if an application required the variable tale references an array of four elements. Each of these elements in turn references an array of five integers. These application will need to use two dimensional array.
Add comment February 25, 2008
9.6
1. Parallel arrays can be achieved by using two arrays in which corresponding elements are related.2. In this example, the parallel arrays are both full and the loops use the instance variable length. 3. String [] name = new String[50]int [] age = new int [50]int [] security = new int [50]String searchPerson;int correspondingAge = -1, correspondingSecurity = -1searchName = …for (int i = 0, i<name.length; i ++) if (searchName.equal (name[i]))correspondingAge = age [i]correpondingSecurity = security [i]break;}4.5. array should contain the exponent and the other array should contain 2 raised to that power.
Add comment February 25, 2008
9.5
1.The programmer will try to solve the problem by tracking the array’s logical size with a separate integer variable.
2. When the array is not full,one must replace the array’s physical length with it logical size of loop.
Add comment February 25, 2008
9.4
1. Declare and instantiate array variables for the following data:– double[] abc = new double[15] string[] abcd = new string[20] 2. What is an initializer list? – It is another way to initialize the array, it assign the exact values to the array’s element. 3. Use an initializer list to create the following arrays:a. five test scores of 100, 90, 75, 60, and 88. int [] aaa = {100, 90, 75, 60, 88}b. three interest rates of 0.12, 0.05, and 0.15 double[] bbb = {0.12, 0.05, 0.15}c. two strings, your first name and last name string[] ccc = {david, chen} 4. Why is it better to use the form <type> [] <variable> instead of <type> <variable>[] when declaring an array variable. – It’s more confusing.
Add comment February 19, 2008
9.3
1. aWrite a loop that prints all of the items in an array a to the terminal screen. – int i = 0 for (i==0, i<a.length, i++) System.out.print(a[i]) 2. Repeat Question 1 put but print the items in reverse order. – int i = a.length – 1 for (i == a.length – 1; i>=0; i –) System.out.print(a[i])3. — int index; for (int i =0; i < a. length; i ++){ if (a[i] <0 ){ index = i; break; } else { index = a.length; } System.out.print (index) ;4. Describe what the following code segments do: a. It will change all the negative values of a to positive value by taking the absolute values of them. b. 5. What is the advantage of using the instance variable length variable length in a loop in a loop with an array. –
Add comment February 14, 2008
9.2
1. Assume that the array a contains the five integers 34, 23, 67, 89, and 12. Write the values of the following expressions:- a. 34 b. a[a.length -1] =4 c. a[2]+ a[3] = 156What happens when a program attempts to access an item at an index that is less than 0 or greater than or equal to the array’s length?– The JVM checks the values of subscripts before using them and throws an ArrayIndexOutOfBoundsException if they are out of bound.
Add comment February 14, 2008
9.1
A Program needs many variables to store and process data, How does an array solve this problem?– An array can group similar data with one array that contains many elements2. How does the programmer access an item in an array?– They use the name and the index to access it.3. Mary is using an array of doubles to store an employee’s wage amounts for each day of the week(Monday through Friday). Draw a picture of this array with sample items and references to each one.–
Add comment February 14, 2008
