05. Coins

package main

import "fmt"

func main() {
    var input float64
    fmt.Scanln(&input)

    var change = int(input * 100)
    var coinCount = 0

    if change >= 200 {
        coinCount += change / 200
        change %= 200
    }
    if change >= 100 {
        coinCount += change / 100
        change %= 100
    }
    if change >= 50 {
        coinCount += change / 50
        change %= 50
    }
    if change >= 20 {
        coinCount += change / 20
        change %= 20;
    }
    if change >= 10 {
        coinCount += change / 10
        change %= 10
    }
    if change >= 5 {
        coinCount += change / 5
        change %= 5
    }
    if change >= 2 {
        coinCount += change / 2
        change %= 2
    }
    if change == 1 {
        coinCount++
        change--
    }

    fmt.Println(coinCount)
}

ИЛИ:

package main

import "fmt"

func main() {
    var input float64
    fmt.Scanln(&input)

    var change = int(input * 100)

    for coinCount := 0; ; coinCount++ {
        if change == 0 {
            fmt.Println(coinCount)
            break
        } else if change >= 200 {
            change -= 200
        } else if change >= 100 {
            change -= 100
        } else if change >= 50 {
            change -= 50
        } else if change >= 20 {
            change -= 20
        } else if change >= 10 {
            change -= 10
        } else if change >= 5 {
            change -= 5
        } else if change >= 2 {
            change -= 2
        } else {
            change--
        }
    }
}

РЕШЕНИЯ С МАСИВ:

package main

import "fmt"

func main() {
    var input float64
    fmt.Scanln(&input)

    var change = int(input * 100)

    coins := []int{200, 100, 50, 20, 10, 5, 2, 1}

    var coinCount = 0

    for i := 0; i < len(coins); i++ {
        if change >= coins[i] {
            coinCount += change / coins[i]
            change %= coins[i]
        }
    }

   fmt.Println(coinCount)
}

ИЛИ:

package main

import "fmt"

func main() {
    var input float64
    fmt.Scanln(&input)

    var change = int(input * 100)

    coins := []int{200, 100, 50, 20, 10, 5, 2, 1}

    var coinCount = 0

    for _, coin := range coins {
        if change >= coin {
            coinCount += change / coin
            change %= coin
        }
    }

   fmt.Println(coinCount)
}