init

dup/dup1.go

@@ -0,0 +1,26 @@
+// Dup1 prints the text of each line that appears more than
+// once in the standard input, preceeded by its count.
+
+package main
+
+import(
+	"bufio"
+	"fmt"
+	"os"
+)
+
+func main() {
+	counts := make(map[string]int)
+	input := bufio.NewScanner(os.Stdin)
+
+	for input.Scan() {
+		counts[input.Text()]++
+	}
+	//NOTE: ingnoring potential errors from input.Err()
+	for line, n := range counts {
+		if n > 1 {
+			fmt.Printf("%d\t%s\n", n , line)
+		}
+	}
+	
+}