Java Program - Find Smallest Number among three Numbers


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Three numbers $$x$$, $$y$$ and $$z$$ are given and the smallest number among these three numbers can be found out using below methods.

Example: Using If statement

In the below example, only if conditional statements are used.

public class MyClass {
  static void smallest(int x, int y, int z) {
    int min = x;
    if (x <= y && x <= z)
      {min = x;}
    if (y <= x && y <= z)
      {min = y;}
    if (z <= x && z <= y)
      {min = z;}
    System.out.println("Smallest number among " + x + ", " + y + " and " + z + " is: " + min);
  }

  public static void main(String[] args) {
    smallest(100, 50, 25);
    smallest(50, 50, 25);
  }
}

Output

Smallest number among 100 , 50 and 25 is:  25
Smallest number among 50 , 50 and 25 is:  25

Example: Using If-else statement

It can also be solved using If-else conditional statements.

public class MyClass {
  static void smallest(int x, int y, int z) {
    int min = x;
    if (x <= y && x <= z)
      {min = x;}
    else if (y <= x && y <= z)
      {min = y;}
    else 
      {min = z;}
    System.out.println("Smallest number among " + x + ", " + y + " and " + z + " is: " + min);
  }

  public static void main(String[] args) {
    smallest(100, 50, 25);
    smallest(50, 50, 25);
  }
}

Output

Smallest number among 100 , 50 and 25 is:  25
Smallest number among 50 , 50 and 25 is:  25

Example: Using Nested If-else statement

The above problem can also be solved using nested if-else conditional statements.

public class MyClass {
  static void smallest(int x, int y, int z) {
    int min = x;
    if (x <= y)
      {
        if(x <= z) 
          {min = x;}
        else
          {min = z;}
      }
    else
      {
        if(y <= z) 
          {min = y;}
        else
          {min = z;}
      }
    System.out.println("Smallest number among " + x + ", " + y + " and " + z + " is: " + min);
  }

  public static void main(String[] args) {
    smallest(100, 50, 25);
    smallest(50, 50, 25);
  }
}

Output

Smallest number among 100 , 50 and 25 is:  25
Smallest number among 50 , 50 and 25 is:  25

Example: Using ternary operator

The ternary operator can also be used here.

public class MyClass {
  static void smallest(int x, int y, int z) {
    int min = x;
    min = (x < y)? ((x < z)? x : z) : ((y < z)? y : z);
    System.out.println("Smallest number among " + x + ", " + y + " and " + z + " is: " + min);
  }

  public static void main(String[] args) {
    smallest(100, 50, 25);
    smallest(50, 50, 25);
  }
}

Output

Smallest number among 100 , 50 and 25 is:  25
Smallest number among 50 , 50 and 25 is:  25



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