added votes to learn maps

playground/countVotes.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"git.linuxhg.com/john-okeefe/datafile"
 	"git.linuxhg.com/john-okeefe/keyboard"
+	"sort"
 	"strings"
 )
 
@@ -15,5 +16,41 @@ func countVotes() {
 	fileString = strings.TrimSpace(fileString)
 	lines, err := datafile.GetStrings(fileString)
 	Error(err)
-	fmt.Println(lines)
+
+	// Count the hard way with slices
+	var names []string
+	var counts []int
+	for _, line := range lines {
+		matched := false
+		for i, name := range names {
+			if name == line {
+				counts[i]++
+				matched = true
+			}
+		}
+		if matched == false {
+			names = append(names, line)
+			counts = append(counts, 1)
+		}
+	}
+
+	for i, name := range names {
+		fmt.Printf("%s: %d\n", name, counts[i])
+	}
+
+	fmt.Println("")
+
+	// Easy way
+	votes := make(map[string]int)
+	var namesMap []string
+	for _, line := range lines {
+		votes[line]++
+	}
+	for name := range votes {
+		namesMap = append(namesMap, name)
+	}
+	sort.Strings(namesMap)
+	for _, name := range namesMap {
+		fmt.Printf("%v: %v\n", name, votes[name])
+	}
 }