Question

Write code in static void main method class, which creates a boolean array called flags, size 10, and using a for loop sets each element to alternating values (true at index zero, false at index one

Write code in a static void main method class, which creates a float array called sales, size 5, uses an initializer list to instantiate its elements with positive values having two decimal places (example 7.25), and using a for loop reads those values of each element, prints the sum of all the elements.

HW Write code in a static void main method class, which creates a character array called vowels, size 5, prompt the user to enter one at a time into a separate element the letters A E I O U then print the first letter by referencing the array list. Then print "How you doing?

Answer 1

code:

import java.util.Scanner;

class Main {

public static void main(String[] args) {

//creating boolean array of size 10

boolean flags[] = new boolean[10];

//for loop to set the values

for (int i=0;i<10;i++){

//checking for alternate values

if(i%2 == 0){

flags[i] = true;

}else{

flags[i] = false;

}

}

//printing flags array

for(int i=0;i<10;i++)

System.out.print(flags[i]+" ");

System.out.println();

//creating a float array and initializing

double numbers[] = new double[]{2.12,1.22,4.53,23.45,67.54};

//using for loop to print and sum of values

double sum = 0;

for(int i=0;i<5;i++){

System.out.println(numbers[i]+" ");

sum += numbers[i];

}

System.out.printf("Sum : %.2f",sum);

System.out.println();

//creating a character array

char vowels[] = new char[5];

Scanner sc = new Scanner(System.in);

//prompting user to enter vowels

for(int i=0;i<5;i++){

System.out.println("Etner a vowel : ");

vowels[i] = sc.next().charAt(0);

}

//printing first letter

System.out.println("First letter : "+vowels[0]);

System.out.println("How you doing?");

}

}