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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| add_catch(test_add_one_row_to_tree test.cpp) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| #pragma once | ||
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|
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| #include <tree_node.h> | ||
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| // Time: O(N) | ||
| // Space: O(N) | ||
|
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| class Solution { | ||
| public: | ||
| static TreeNode *addOneRow(TreeNode *root, int val, int depth, | ||
| bool left = true) { | ||
| if (depth == 1) { | ||
| return left ? new TreeNode(val, root, nullptr) | ||
| : new TreeNode(val, nullptr, root); | ||
| } | ||
| if (!root) { | ||
| return nullptr; | ||
| } | ||
| root->left = addOneRow(root->left, val, depth - 1, true); | ||
| root->right = addOneRow(root->right, val, depth - 1, false); | ||
| return root; | ||
| } | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| #include <catch.hpp> | ||
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| #include <solution.hpp> | ||
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| #include <tree_node.h> | ||
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| TEST_CASE("Simple") { | ||
| struct TestCase { | ||
| Tree root; | ||
| int val; | ||
| int depth; | ||
| Tree expected; | ||
| }; | ||
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| std::vector<TestCase> test_cases{ | ||
| { | ||
| .root = {4, 2, 6, 3, 1, 5}, | ||
| .val = 1, | ||
| .depth = 2, | ||
| .expected = {4, 1, 1, 2, std::nullopt, std::nullopt, 6, 3, 1, 5}, | ||
| }, | ||
| { | ||
| .root = {4, 2, std::nullopt, 3, 1}, | ||
| .val = 1, | ||
| .depth = 3, | ||
| .expected = {4, 2, std::nullopt, 1, 1, 3, std::nullopt, std::nullopt, | ||
| 1}, | ||
| }, | ||
| { | ||
| .root = {5}, | ||
| .val = 1, | ||
| .depth = 1, | ||
| .expected = {1, 5}, | ||
| }, | ||
| { | ||
| .root = {1, 2, 3, 4}, | ||
| .val = 5, | ||
| .depth = 4, | ||
| .expected = {1, 2, 3, 4, std::nullopt, std::nullopt, std::nullopt, 5, | ||
| 5}, | ||
| }, | ||
| }; | ||
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| for (const auto &[root, val, depth, expected] : test_cases) { | ||
| const Tree actual = Solution::addOneRow(Copy(root), val, depth); | ||
| REQUIRE(expected == actual); | ||
| } | ||
| } |