Initial data commit

Task/Multi-dimensional-array/Go/multi-dimensional-array.go

@@ -0,0 +1,56 @@
+package main
+
+import "fmt"
+
+type md struct {
+    dim []int
+    ele []float64
+}
+
+func newMD(dim ...int) *md {
+    n := 1
+    for _, d := range dim {
+        n *= d
+    }
+    return &md{append([]int{}, dim...), make([]float64, n)}
+}
+
+func (m *md) index(i ...int) (x int) {
+    for d, dx := range m.dim {
+        x = x*dx + i[d]
+    }
+    return
+}
+
+func (m *md) at(i ...int) float64 {
+    return m.ele[m.index(i...)]
+}
+
+func (m *md) set(x float64, i ...int) {
+    m.ele[m.index(i...)] = x
+}
+
+func (m *md) show(i ...int) {
+    fmt.Printf("m%d = %g\n", i, m.at(i...))
+}
+
+func main() {
+    m := newMD(5, 4, 3, 2)
+    m.show(4, 3, 2, 1)
+    m.set(87, 4, 3, 2, 1)
+    m.show(4, 3, 2, 1)
+
+    for i := 0; i < m.dim[0]; i++ {
+        for j := 0; j < m.dim[1]; j++ {
+            for k := 0; k < m.dim[2]; k++ {
+                for l := 0; l < m.dim[3]; l++ {
+                    x := m.index(i, j, k, l)
+                    m.set(float64(x)+.1, i, j, k, l)
+                }
+            }
+        }
+    }
+    fmt.Println(m.ele[:10])
+    fmt.Println(m.ele[len(m.ele)-10:])
+    m.show(4, 3, 2, 1)
+}