Data commit

Task/Tree-from-nesting-levels/Go/tree-from-nesting-levels-1.go

@@ -0,0 +1,41 @@
+package main
+
+import "fmt"
+
+type any = interface{}
+
+func toTree(list []int) any {
+    s := []any{[]any{}}
+    for _, n := range list {
+        for n != len(s) {
+            if n > len(s) {
+                inner := []any{}
+                s[len(s)-1] = append(s[len(s)-1].([]any), inner)
+                s = append(s, inner)
+            } else {
+                s = s[0 : len(s)-1]
+            }
+        }
+        s[len(s)-1] = append(s[len(s)-1].([]any), n)
+        for i := len(s) - 2; i >= 0; i-- {
+            le := len(s[i].([]any))
+            s[i].([]any)[le-1] = s[i+1]
+        }
+    }
+    return s[0]
+}
+
+func main() {
+    tests := [][]int{
+        {},
+        {1, 2, 4},
+        {3, 1, 3, 1},
+        {1, 2, 3, 1},
+        {3, 2, 1, 3},
+        {3, 3, 3, 1, 1, 3, 3, 3},
+    }
+    for _, test := range tests {
+        nest := toTree(test)
+        fmt.Printf("%17s => %v\n", fmt.Sprintf("%v", test), nest)
+    }
+}

Task/Tree-from-nesting-levels/Go/tree-from-nesting-levels-2.go

@@ -0,0 +1,42 @@
+package main
+
+import "fmt"
+
+type any = interface{}
+
+func toTree(list []int, index, depth int) (int, []any) {
+    var soFar []any
+    for index < len(list) {
+        t := list[index]
+        if t == depth {
+            soFar = append(soFar, t)
+        } else if t > depth {
+            var deeper []any
+            index, deeper = toTree(list, index, depth+1)
+            soFar = append(soFar, deeper)
+        } else {
+            index = index - 1
+            break
+        }
+        index = index + 1
+    }
+    if depth > 1 {
+        return index, soFar
+    }
+    return -1, soFar
+}
+
+func main() {
+    tests := [][]int{
+        {},
+        {1, 2, 4},
+        {3, 1, 3, 1},
+        {1, 2, 3, 1},
+        {3, 2, 1, 3},
+        {3, 3, 3, 1, 1, 3, 3, 3},
+    }
+    for _, test := range tests {
+        _, nest := toTree(test, 0, 1)
+        fmt.Printf("%17s => %v\n", fmt.Sprintf("%v", test), nest)
+    }
+}