add new solutions

solutions/1/q100/solution.go

@@ -0,0 +1,27 @@
+package q100
+
+type TreeNode struct {
+	Val   int
+	Left  *TreeNode
+	Right *TreeNode
+}
+
+func traverse(p, q *TreeNode) bool {
+	if p == nil && q == nil {
+		return true
+	}
+	if p == nil || q == nil {
+		return false
+	}
+	if p.Val != q.Val {
+		return false
+	}
+	return traverse(p.Left, q.Left) &&
+		traverse(p.Right, q.Right)
+}
+
+func isSameTree(p *TreeNode, q *TreeNode) bool {
+	return traverse(p, q)
+}
+
+var _ = isSameTree