Finding Duplicate Lines
👍 cat dup1.in
good morning
good afternoon
bye
bye
hi
hello
hi
hello
hello
👍 go run dup1.go < dup1.in
3 hello
2 bye
2 hi
👍 cat dup1.go
package main
import (
"bufio"
"fmt"
"os"
)
func main() {
counts := make(map[string]int)
input := bufio.NewScanner(os.Stdin)
for input.Scan() {
counts[input.Text()]++
}
for line, n := range counts {
if n > 1 {
fmt.Printf("%d\t%s\n", n, line)
}
}
}
ch 1.3 Finding Duplicate Lines p27/8 of