Data commit

Task/Create-a-two-dimensional-array-at-runtime/Go/create-a-two-dimensional-array-at-runtime-1.go

@@ -0,0 +1,28 @@
+package main
+
+import "fmt"
+
+func main() {
+    var row, col int
+    fmt.Print("enter rows cols: ")
+    fmt.Scan(&row, &col)
+
+    // allocate composed 2d array
+    a := make([][]int, row)
+    for i := range a {
+        a[i] = make([]int, col)
+    }
+
+    // array elements initialized to 0
+    fmt.Println("a[0][0] =", a[0][0])
+
+    // assign
+    a[row-1][col-1] = 7
+
+    // retrieve
+    fmt.Printf("a[%d][%d] = %d\n", row-1, col-1, a[row-1][col-1])
+
+    // remove only reference
+    a = nil
+    // memory allocated earlier with make can now be garbage collected.
+}

Task/Create-a-two-dimensional-array-at-runtime/Go/create-a-two-dimensional-array-at-runtime-2.go

@@ -0,0 +1,6 @@
+    // allocate composed 2d array
+    a := make([][]int, row)
+    e := make([]int, row * col)
+    for i := range a {
+        a[i] = e[i*col:(i+1)*col]
+    }

Task/Create-a-two-dimensional-array-at-runtime/Go/create-a-two-dimensional-array-at-runtime-3.go

@@ -0,0 +1,3 @@
+func get(r, c int) int {
+    return e[r*cols+c]
+}