initial commit

arrays/arrays.go

@@ -0,0 +1,32 @@
+package main
+
+import "fmt"
+
+func main(){
+	//here we create an array a that will hold exactly 5 ints.
+	// arrays are typed and statically lengthed
+	// by default an array is zero-valued which for ints is just 0 in all positions
+	var a [5]int
+	fmt.Println("emp:",a)
+
+	//we can set a value at an index using the arrray[index] = value syntax
+	//and get the value @ an index with the array[index] syntax
+	//the builtin len returns the length of an array.
+	a[4] = 100
+	fmt.Println("set:", a)
+	fmt.Println("get:", a[4])
+	fmt.Println("len:", len(a))
+
+	//the following can be used to declare and initalize the valaues
+	// of an array on a single line
+	b := [5]int{1,2,3,4,5}
+	fmt.Println("dcl:", b)
+
+	var twoD [2][3]int
+	for i := 0; i < 2; i++ {
+		for j := 0; j < 3; j++ {
+			twoD[i][j] = i+j
+		}
+	}
+	fmt.Println("2d: ", twoD)
+}