添加 structures

structures/NestedInteger.go

@@ -0,0 +1,37 @@
+package structures
+
+// NestedInteger  is the interface that allows for creating nested lists.
+// You should not implement it, or speculate about its implementation
+type NestedInteger struct {
+	Num int
+	Ns  []*NestedInteger
+}
+
+// IsInteger Return true if this NestedInteger holds a single integer, rather than a nested list.
+func (n NestedInteger) IsInteger() bool {
+	return n.Ns == nil
+}
+
+// GetInteger Return the single integer that this NestedInteger holds, if it holds a single integer
+// The result is undefined if this NestedInteger holds a nested list
+// So before calling this method, you should have a check
+func (n NestedInteger) GetInteger() int {
+	return n.Num
+}
+
+// SetInteger Set this NestedInteger to hold a single integer.
+func (n *NestedInteger) SetInteger(value int) {
+	n.Num = value
+}
+
+// Add  Set this NestedInteger to hold a nested list and adds a nested integer to it.
+func (n *NestedInteger) Add(elem NestedInteger) {
+	n.Ns = append(n.Ns, &elem)
+}
+
+// GetList Return the nested list that this NestedInteger holds, if it holds a nested list
+// The list length is zero if this NestedInteger holds a single integer
+// You can access NestedInteger's List element directly if you want to modify it
+func (n NestedInteger) GetList() []*NestedInteger {
+	return n.Ns
+}