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@@ -1068,26 +1068,24 @@ comments: true
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```c title="array_binary_tree.c"
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/* 数组表示下的二叉树类 */
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struct arrayBinaryTree {
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typedef struct {
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vector *tree;
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};
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typedef struct arrayBinaryTree arrayBinaryTree;
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} ArrayBinaryTree;
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/* 构造函数 */
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arrayBinaryTree *newArrayBinaryTree(vector *arr) {
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arrayBinaryTree *newABT = malloc(sizeof(arrayBinaryTree));
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ArrayBinaryTree *newArrayBinaryTree(vector *arr) {
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ArrayBinaryTree *newABT = malloc(sizeof(ArrayBinaryTree));
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newABT->tree = arr;
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return newABT;
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}
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/* 节点数量 */
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int size(arrayBinaryTree *abt) {
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int size(ArrayBinaryTree *abt) {
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return abt->tree->size;
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}
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/* 获取索引为 i 节点的值 */
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int val(arrayBinaryTree *abt, int i) {
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int val(ArrayBinaryTree *abt, int i) {
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// 若索引越界,则返回 INT_MAX ,代表空位
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if (i < 0 || i >= size(abt))
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return INT_MAX;
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@@ -1095,7 +1093,7 @@ comments: true
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}
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/* 深度优先遍历 */
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void dfs(arrayBinaryTree *abt, int i, const char *order, vector *res) {
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void dfs(ArrayBinaryTree *abt, int i, const char *order, vector *res) {
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// 若为空位,则返回
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if (val(abt, i) == INT_MAX)
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return;
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@@ -1119,7 +1117,7 @@ comments: true
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}
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/* 层序遍历 */
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vector *levelOrder(arrayBinaryTree *abt) {
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vector *levelOrder(ArrayBinaryTree *abt) {
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vector *res = newVector();
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// 直接遍历数组
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for (int i = 0; i < size(abt); i++) {
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@@ -1132,21 +1130,21 @@ comments: true
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}
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/* 前序遍历 */
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vector *preOrder(arrayBinaryTree *abt) {
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vector *preOrder(ArrayBinaryTree *abt) {
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vector *res = newVector();
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dfs(abt, 0, "pre", res);
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return res;
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}
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/* 中序遍历 */
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vector *inOrder(arrayBinaryTree *abt) {
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vector *inOrder(ArrayBinaryTree *abt) {
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vector *res = newVector();
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dfs(abt, 0, "in", res);
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return res;
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}
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/* 后序遍历 */
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vector *postOrder(arrayBinaryTree *abt) {
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vector *postOrder(ArrayBinaryTree *abt) {
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vector *res = newVector();
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dfs(abt, 0, "post", res);
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return res;
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