Write a Java program that performs the following steps: Prompt the user to input two positive integers: firstNum and secondNum (firstNum must be less than secondNum). Output all odd numbers between firstNum and secondNum. Output the sum of all even numbers between firstNum and secondNum. Output the sum of the square of the odd numbers between firstNum and secondNum.
- Write a Java program that performs the following steps:
- Prompt the user to input two positive integers: firstNum and secondNum
(firstNum must be less than secondNum).
- Output all odd numbers between firstNum and secondNum.
- Output the sum of all even numbers between firstNum and
secondNum.
- Output the sum of the square of the odd numbers between firstNum
and secondNum.
- We want to write a Java program to encode a name by creating an array of integers.
- Write Java method called encodeName that takes a name as a string (without spacing and all lower case) and returns an array of integers of the same size as name whose elements are the number in the alphabet of the corresponding character in name (starting from zero). For example, calling this method with name = “aabed” it should return [0, 0, 1, 4, 3].
- Write a printArray method that prints all the elements of an array of integers in one line.
- Write a main method that calls encodeName and printArray methods to print the array corresponding to your name.
- Write a Java program that prompts the user to enter a line of text and outputs the number of digits, the number of lower case letter and the number of upper case letter in that text.
Q2. Write a Java program named RandomNumbers that creates a single-dimensional array of int of size 20 and initialize its elements with 20 random integer numbers (their range must be between 1 and 100 inclusive.
- Write statements in your program to display the array elements, and how many odd and even numbers are there in the array.
For example, if the random numbers were stored in the array are:
83 48 89 66 40 94 31 31 12 45 45 87 10 24 78 2 28 31 52 46
Then the program should display:
The random numbers are:
83 48 89 66 40 94 31 31 12 45 45 87 10 24 78 2 28 31 52 46
There are 8 odd numbers
There are 12 even numbers
- An element in the array is a peak (max or min) if the elements before and after that element are greater than the element itself (min) or the elements before and after that element are less than the element (max). Write a method in your program called displayPeaks that will take a single-dimensional array as parameter and display all peak elements of that array (line by line) together with their index and whether they are max or min.
For example, calling the method displayPeaks from main method will display:
|
83 at position 0 is a max 48 at position 1 is a min 89 at position 2 is a max 40 at position 4 is a min 94 at position 5 is a max 12 at position 8 is a min 87 at position 11 is a max 10 at position 12 is a min 78 at position 14 is a max 2 at position 15 is a min 52 at position 18 is a max 46 at position 19 is a min |
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