HTML Code

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Javascript Code

    // JavaScript program to find the area of a triangle

    let side1 = prompt('Enter side1: ');
    let side2 = prompt('Enter side2: ');
    let side3 = prompt('Enter side3: ');
    
    // calculate the semi-perimeter
    let s = (side1 + side2 + side3) / 2;
    
    //calculate the area
    let areaValue = Math.sqrt(
        s * (s - side1) * (s - side2) * (s - side3)
    );
    
    console.log(
        `The area of the triangle is ${areaValue}`
    );
        

Python Code

    # Python program to swap two variables

    x = 5
    y = 10
    
    # To take inputs from the user
    #x = input('Enter value of x: ')
    #y = input('Enter value of y: ')
    
    # create a temporary variable and swap the values
    temp = x
    x = y
    y = temp
    
    print('The value of x after swapping: {}'.format(x))
    print('The value of y after swapping: {}'.format(y))
        

Kotlin Code

    import java.util.ArrayList
    fun main(args: Array) {
        val list1 = ArrayList()
        list1.add("a")
    
        val list2 = ArrayList()
        list2.add("b")
    
        val joined = ArrayList()
    
        joined.addAll(list1)
        joined.addAll(list2)
    
        println("list1: $list1")
        println("list2: $list2")
        println("joined: $joined")
    }