71 lines
1.2 KiB
Go
71 lines
1.2 KiB
Go
package main
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import (
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"io/ioutil"
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"log"
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"strconv"
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"strings"
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)
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func main() {
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content, err := ioutil.ReadFile("input.txt")
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if err != nil {
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log.Print(err)
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return
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}
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lines := strings.Split(string(content), "\r\n")
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numbers := make([]int, len(lines))
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for i := 0; i < len(numbers); i++ {
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number, err := strconv.Atoi(lines[i])
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if err != nil {
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log.Print(err)
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return
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}
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numbers[i] = number
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}
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var num1 int
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var num2 int
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twoNumLoop:
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for i := 0; i < len(numbers); i++ {
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for j := i + 1; j < len(numbers); j++ {
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if numbers[i]+numbers[j] == 2020 {
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num1 = numbers[i]
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num2 = numbers[j]
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break twoNumLoop
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}
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}
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}
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log.Printf("First Number: %d", num1)
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log.Printf("Second Number: %d", num2)
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log.Printf("%d * %d = %d", num1, num2, num1*num2)
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var num3 int
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threeNumLoop:
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for i := 0; i < len(numbers); i++ {
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for j := i + 1; j < len(numbers); j++ {
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for k := j + 1; k < len(numbers); k++ {
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if numbers[i]+numbers[j]+numbers[k] == 2020 {
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num1 = numbers[i]
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num2 = numbers[j]
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num3 = numbers[k]
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break threeNumLoop
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}
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}
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}
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}
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log.Printf("First Number: %d", num1)
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log.Printf("Second Number: %d", num2)
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log.Printf("Third Number: %d", num3)
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log.Printf("%d * %d * %d = %d", num1, num2, num3, num1*num2*num3)
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}
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