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day5.go
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day5.go
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package main
import (
"os"
"strings"
"utils"
)
func reactPoly(input string) string {
output := ""
for _, newChar := range input {
lastIdx := len(output) - 1
if output != "" &&
rune(output[lastIdx]) != newChar &&
strings.EqualFold(string(output[lastIdx]), string(newChar)) {
output = output[:lastIdx]
} else {
output += string(newChar)
}
}
return output
}
func main() {
lines := utils.ReadFileToLines(os.Args[1])
scenarioOnePoly := reactPoly(lines[0])
println(len(scenarioOnePoly))
alphabet := "abcdefghijklmnopqrstuvwxyz"
reduceCharLenghts := make(map[rune]int)
for _, l := range alphabet {
newInput := strings.Replace(lines[0], string(l), "", -1)
newInput = strings.Replace(newInput, strings.ToUpper(string(l)), "", -1)
tempPoly := reactPoly(newInput)
reduceCharLenghts[l] = len(tempPoly)
}
var minChar rune
minCharLength := 10000
for char, length := range reduceCharLenghts {
if length < minCharLength {
minChar = char
minCharLength = length
}
}
println(string(minChar))
println(minCharLength)
}