Kotlin程序计算单利和复利

在这篇文章中，我们将从用户那里输入本金、利率和时间（年），以计算单利和复利：

  • 单利 - 对总本金的百分比利息。与复利相比，收益较低。

  • 复利 - 对本金和累积利息收取的百分比利息。利率高于单利。

以下是演示：

假设我们的输入是：

Principal = 25000.0
Annual Rate of Interest = 10.0
Time (years) = 4.0

期望的输出是：

Simple Interest: 10000.0
Compound Interest: 11602.500000000007

算法

  • 步骤 1 - 开始

  • 步骤 2 - 声明 5 个整数：principalAmount（本金）、interestRate（利率）、timePeriod（期限）、simpleInterest（单利）和 compoundInterest（复利）

  • 步骤 3 - 计算 (p * r * t)/100

  • 步骤 4 - 计算 p * Math.pow(1.0+r/100.0,t) - p;

  • 步骤 5 - 将步骤 4 的输出存储到 simpleInterest 中

  • 步骤 6 - 将步骤 5 的输出存储到 compoundInterest 中

  • 步骤 7 - 显示 simpleInterest

  • 步骤 8 - 显示 compoundInterest

  • 步骤 9 - 结束

示例 1

在这个例子中，我们将使用广泛使用的公式计算单利和复利。首先，声明一个变量表示本金

val principalAmount = 10000

现在，声明利率和期限：

val interestRate = 5
println("The rate of interest is defined as: $interestRate %")

val timePeriod = 2
println("The time period is defined as: $timePeriod years")

使用公式计算单利和复利

val simpleInterest = (principalAmount*interestRate*timePeriod)/100
println("
 Simple Interest is: $simpleInterest")

val compoundInterest = principalAmount.toDouble() * Math.pow((1 +
interestRate.toDouble()/100.00),timePeriod.toDouble()) - principalAmount
println("
 Compound Interest is : $compoundInterest")

现在让我们看看计算单利和复利的完整示例：

fun main() {
   val principalAmount = 10000
   println("Principal amount is defined as: $principalAmount")

   val interestRate = 5
   println("The rate of interest is defined as: $interestRate %")

   val timePeriod = 2
   println("The time period is defined as: $timePeriod years")
   
   val simpleInterest = (principalAmount*interestRate*timePeriod)/100
   println("
 Simple Interest is: $simpleInterest")
   
   val compoundInterest = principalAmount.toDouble() * Math.pow((1 +
   interestRate.toDouble()/100.00),timePeriod.toDouble()) - principalAmount
   println("
 Compound Interest is : $compoundInterest")
}

输出

Principal amount is defined as: 10000
The rate of interest is defined as: 5 %
The time period is defined as: 2 years
Simple Interest is: 1000
Compound Interest is: 1025.0

示例 2

在这个例子中，我们将计算单利和复利：

fun main() {
   val principalAmount = 10000
   println("Principal amount is defined as: $principalAmount")

   val interestRate = 5
   println("The rate of interest is defined as: $interestRate %")

   val timePeriod = 3
   println("The time period is defined as: $timePeriod years")
   getInterest(principalAmount, interestRate, timePeriod)
}

fun getInterest(principalAmount: Int, interestRate: Int, timePeriod: Int) {
   val simpleInterest = (principalAmount*interestRate*timePeriod)/100
   println("
 Simple Interest is: $simpleInterest")
   val compoundInterest = principalAmount.toDouble() * Math.pow((1 +
   interestRate.toDouble()/100.00),timePeriod.toDouble()) - principalAmount
   println("
 Compound Interest is: $compoundInterest")
}

输出

Principal amount is defined as: 10000
The rate of interest is defined as: 5 %
The time period is defined as: 3 years

 Simple Interest is: 1500
Compound Interest is: 1576.2500000000018

更新于：2022年10月13日

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