Added Max function

Author: Cara-and-plants

tut/stat/stat.go

@@ -10,9 +10,36 @@ import (
 )
 
 type Stats struct {
-	// TODO(kyle): Define
+	data []float64
 }
 
+func (s *Stats) Add(x ...float64) {
+	s.data = append(s.data, x...)
+}
+func (s *Stats) Mean() float64 {
+	var x float64
+	x = 0
+	var i int
+	for i = 0; i < len(s.data); i++ {
+		x = x + s.data[i]
+	}
+
+	x = x / float64(len(s.data))
+	return x
+}
+
+func (s *Stats) Max() float64 {
+	var max float64
+	max = 0
+	var i int
+	for i = 0; i < len(s.data); i++ {
+		if s.data[i] > max {
+			max = s.data[i]
+		}
+	}
+
+	return max
+}
 func main() {
 	fin, err := os.Open("CFSB.csv")
 	if err != nil {

tut/stat/stat_test.go

@@ -3,9 +3,28 @@ package main
 import "testing"
 
 func TestMean(t *testing.T) {
+	var st Stats
+	st.Add(4, 8)
+	var got float64
+	var want float64
+	got = st.Mean()
+	want = 6.0
+	if got != want {
+		t.Errorf("got: %f, want: %f", got, want)
+	}
 }
 
 func TestMax(t *testing.T) {
+	var st Stats
+	st.Add(2, 3, 33, 5, 67, 8, 10, 12, 15)
+	var got float64
+	var want float64
+	got = st.Max()
+	want = 67
+	if got != want {
+		t.Errorf("got: %f, want: %f", got, want)
+	}
+
 }
 
 func TestMin(t *testing.T) {