sagar-viradiya

private val springForce: SpringForce by lazy(LazyThreadSafetyMode.NONE) {
    SpringForce(0f).apply {
        stiffness = SpringForce.STIFFNESS_MEDIUM
        dampingRatio = SpringForce.DAMPING_RATIO_HIGH_BOUNCY
    }
}

private val springAnimationTranslationX: SpringAnimation by lazy(LazyThreadSafetyMode.NONE) {
    SpringAnimation(android_bot, DynamicAnimation.TRANSLATION_X).setSpring(springForce)
}

sagar-viradiya

private fun setupTouchListener() {

    android_bot.setOnTouchListener { view, motionEvent ->

        when(motionEvent?.action) {

            MotionEvent.ACTION_DOWN -> {
                xDiffInTouchPointAndViewTopLeftCorner = motionEvent.rawX - view.x
                yDiffInTouchPointAndViewTopLeftCorner = motionEvent.rawY - view.y

sagar-viradiya

val flingAnimationX: FlingAnimation by lazy(LazyThreadSafetyMode.NONE) {
    FlingAnimation(android_bot, DynamicAnimation.X).setFriction(1.1f)
}

val flingAnimationY: FlingAnimation by lazy(LazyThreadSafetyMode.NONE) {
    FlingAnimation(android_bot, DynamicAnimation.Y).setFriction(1.1f)
}

sagar-viradiya

val gestureListener = object : GestureDetector.SimpleOnGestureListener() {

    override fun onDown(e: MotionEvent?): Boolean {
        return true
    }

    override fun onFling(e1: MotionEvent?, e2: MotionEvent?, velocityX: Float, velocityY: Float): Boolean {

        flingAnimationX.setStartVelocity(velocityX)
        flingAnimationY.setStartVelocity(velocityY)

sagar-viradiya

android_bot.viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
    override fun onGlobalLayout() {
        flingAnimationX.setMinValue(0f).setMaxValue((screenSize.x - android_bot.width).toFloat())
        flingAnimationY.setMinValue(0f).setMaxValue((screenSize.y - android_bot.height).toFloat())
        android_bot.viewTreeObserver.removeOnGlobalLayoutListener(this)
    }
})

sagar-viradiya

val firstSpringAnimationX by lazy(LazyThreadSafetyMode.NONE) {
    createSpringAnimation(android_bot1, DynamicAnimation.TRANSLATION_X)
}

val firstSpringAnimationY by lazy(LazyThreadSafetyMode.NONE) {
    createSpringAnimation(android_bot1, DynamicAnimation.TRANSLATION_Y)
}

val secondSpringAnimationX by lazy(LazyThreadSafetyMode.NONE) {
    createSpringAnimation(android_bot2, DynamicAnimation.TRANSLATION_X)

sagar-viradiya

private fun setupOnTouchListener() {

    ...

    android_bot.setOnTouchListener { view, motionEvent ->

        if(motionEvent.action == MotionEvent.ACTION_MOVE) {

            val deltaX = motionEvent.rawX - lastX
            val deltaY = motionEvent.rawY - lastY

sagar-viradiya

firstSpringAnimationX.addUpdateListener { _, value, _ ->
    secondSpringAnimationX.animateToFinalPosition(value)
}

firstSpringAnimationY.addUpdateListener { _, value, _ ->
    secondSpringAnimationY.animateToFinalPosition(value)
}

sagar-viradiya

/**
 * Maximum sub array problem
 * 
 * Given an array of integers find the sub array whose sum is maximum
 */

fun main(args: Array<String>) {

    val array = intArrayOf(13, -3, -25, 20, -3, -16, -23, 18, 20, -7, 12, -5, -22, 15, -4, 7)
    print(getMaximumSubArray(array, 0, array.size - 1))

sagar-viradiya

/**
 * Heap sort
 *
 * Given an array, sort it in ascending order using heap sort algorithm
 */

fun main(args: Array<String>) {

    val array = intArrayOf(4, 1, 3, 2, 16, 9, 10, 14, 8, 7)