From e4b842666cced0cb99769dd853ef54a23ee4e11e Mon Sep 17 00:00:00 2001
From: Alex Denes <caskd@redxen.eu>
Date: Fri, 30 Apr 2021 10:42:29 +0000
Subject: [PATCH] Initial progress

---
 fibonacci.go | 22 ++++++++++++++++++++++
 slices.go    | 18 ++++++++++++++++++
 sqrt.go      | 17 +++++++++++++++++
 wc.go        | 19 +++++++++++++++++++
 4 files changed, 76 insertions(+)
 create mode 100644 fibonacci.go
 create mode 100644 slices.go
 create mode 100644 sqrt.go
 create mode 100644 wc.go

diff --git a/fibonacci.go b/fibonacci.go
new file mode 100644
index 0000000..e26cbb3
--- /dev/null
+++ b/fibonacci.go
@@ -0,0 +1,22 @@
+package main
+
+import "fmt"
+
+// fibonacci is a function that returns
+// a function that returns an int.
+func fibonacci() func() int {
+	last := []int {0, 1}
+	return func() int {
+		ret := last[0]
+		temp := []int {last[1], last[0] + last[1]}
+		last = temp
+		return ret
+	}
+}
+
+func main() {
+	f := fibonacci()
+	for i := 0; i < 10; i++ {
+		fmt.Println(f())
+	}
+}
diff --git a/slices.go b/slices.go
new file mode 100644
index 0000000..5939607
--- /dev/null
+++ b/slices.go
@@ -0,0 +1,18 @@
+package main
+
+import "golang.org/x/tour/pic"
+
+func Pic(dx, dy int) [][]uint8 {
+	var ret [][]uint8 = make([][]uint8, dx);
+	for x := 0; x < dx; x++ {
+		ret[x] = make([]uint8, dy);
+		for y := 0; y < dy; y++ {
+			ret[x][y] = uint8((x+y)/2);
+		}
+	}
+	return ret;
+}
+
+func main() {
+	pic.Show(Pic)
+}
diff --git a/sqrt.go b/sqrt.go
new file mode 100644
index 0000000..b835291
--- /dev/null
+++ b/sqrt.go
@@ -0,0 +1,17 @@
+package main
+
+import (
+	"fmt"
+)
+
+func Sqrt(x float64) float64 {
+	z := 1.0;
+	for count := 0; count < 10; count++ {
+		z -= (z*z - x) / (2*z);
+	}
+	return z;
+}
+
+func main() {
+	fmt.Println(Sqrt(2));
+}
diff --git a/wc.go b/wc.go
new file mode 100644
index 0000000..6596d1b
--- /dev/null
+++ b/wc.go
@@ -0,0 +1,19 @@
+package main
+
+import (
+	"golang.org/x/tour/wc"
+	"strings"
+)
+
+func WordCount(s string) map[string]int {
+	var wc map[string]int = make(map[string]int)
+	var str[]string = strings.Fields(s)
+	for _, val := range str {
+		wc[val]++
+	}
+	return wc
+}
+
+func main() {
+	wc.Test(WordCount)
+}