Question 1 : Write a Java method to find the smallest number among three numbers.
import java.util.Scanner;
public class Practice_Day_1 {
static float smallestNumber(float a , float b , float c){
float d;
if (a<b || a<c) {
d = a;
}
else if (b<a || b<c) {
d = b;
}
else{
d = c;
}
return d;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter the first number");
float firstNumber = sc.nextFloat();
System.out.println("Enter the second number");
float secondNumber = sc.nextFloat();
System.out.println("Enter the third number");
float thirdNumber = sc.nextFloat();
float smallNumber = smallestNumber(firstNumber , secondNumber , thirdNumber);
System.out.println(smallNumber);
}
}
Output:
Enter the first number
25
Enter the second number
37
Enter the third number
29
25.0
Question 2 : Write a Java method to compute the average of three numbers.
import java.util.Scanner;
public class Practice_Day_1 {
static float average(float a , float b , float c){
float d = (a + b + c) / 3;
return d;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter the first number");
float firstNumber = sc.nextFloat();
System.out.println("Enter the second number");
float secondNumber = sc.nextFloat();
System.out.println("Enter the third number");
float thirdNumber = sc.nextFloat();
float avg = average(firstNumber , secondNumber , thirdNumber);
System.out.println(avg);
}
}
Output:
Enter the first number
25
Enter the second number
45
Enter the third number
65
45.0
Question 3 : Write a Java method to display the middle character of a string.
Note: a) If the length of the string is odd there will be two middle characters.b) If the length of the string is even there will be one middle character.
import java.util.Scanner;
public class Practice_Day_1 {
static void middleCharacter(String a){
int position;
int length;
int b = a.length();
if (b % 2 == 0) {
position = b / 2 - 1;
length = 2;
System.out.println(a.substring(position , position + length));
}
else{
position = b / 2;
length = 1;
System.out.println(a.substring(position , position + length));
}
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("Enter a String : ");
String a = sc.nextLine();
middleCharacter(a);
}
}
Output 1:(Odd number of characters in the string)
Enter a String : Like The Post
h
Output 2:(Even number of characters in the string)
Enter a String : void
oi
