advent-of-code/2021/01/first.go

39 lines
534 B
Go

package main
import (
"bufio"
"fmt"
"log"
"os"
"strconv"
)
func main() {
f, err := os.Open("input")
if err != nil {
log.Fatalf("%+v", err)
}
defer f.Close()
scanner := bufio.NewScanner(f)
scanner.Split(bufio.ScanLines)
scanner.Scan()
prev, err := strconv.Atoi(scanner.Text())
if err != nil {
log.Fatalf("%+v", err)
}
result := 0
for scanner.Scan() {
i, err := strconv.Atoi(scanner.Text())
if err != nil {
log.Fatalf("%+v", err)
}
if i > prev {
result++
}
prev = i
}
fmt.Println(result)
}