BukaReksaAnnualPercentageFrom3MonthsCalculator.kt

BukaReksaAnnualPercentageFrom3MonthsCalculator.kt

fun main(args: Array<String>) {
    println("This program will calculate annual interest of BukaReksa based on 3 months price")
    println("Input start price")
    val startPrice = readLine()!!.toDouble()
    println("Input end price")
    val endPrice = readLine()!!.toDouble()
    println("Annual interest is ${calculateAnnualInterest(startPrice, endPrice)}")
}

/**
 * Calculate Annual interest based on start price and end price after 3 months period
 */
private fun calculateAnnualInterest(startPrice: Double, endPrice: Double): String {
    val percent = (endPrice - startPrice) / startPrice * 100 * 4
    // both below method return the same result
    // return "${DecimalFormat("#.#####").format(percent)}%"
    return "${String.format("%.5f", percent)}%"
}

// hasil cek annual interest di tanggal 25 Desember 2017
// pasar uang
// 6.17311 CIMB-PRINCIPAL Bukareksa Pasar Uang
// 6.77242% Reksa Dana Syariah Mandiri Bukareksa Pasar Uang

// pendapatan tetap
// 9.96690% CIMB-Principal Total Return Bond Fund
// 20.08363% Syailendra Fixed Income Fund
// 12.30109% Mandiri Investa Dana Syariah

// campuran
// 15.95017% Kresna Flexima
// 2.05082% Cipta Syariah Balance

// saham
// 18.34288% BNP Paribas Pesona - masih terlalu fluktuatif grafiknya
// -7.40085% BNP Paribas Pesona Syariah