二进制搜索树插入数据问题

时间:2019-04-09 09:08:15

标签: c++ binary-search-tree

我正在尝试实现自己的二进制搜索树,我一直坚持插入数据,您能解释一下我在做什么错吗。

void tree::add(int data) {
    tree * tmp = new tree;

    if (root == NULL) {
        root = tmp;
        root->data = data;
        root->left = NULL;
        root->right = NULL;
    }
    else if (data <= root->data) {  
        left = tmp;
        left->data = data;
        left->left = NULL;
        left->right = NULL;

        while (tmp != NULL) {
            if (data <= left->data) {
                tmp = left->left;
            } else {
                tmp = left->right;
            }

        }
}

我正在尝试填充左节点,如果数据i小于根,但如果数据大于此叶但仍小于根,则它应该是右子节点,但实际上我具有访问权限

1 个答案:

答案 0 :(得分:0)

您应该修改算法的逻辑:

//here you set the pointers to null 
left->left = NULL;
left->right = NULL;

while (tmp != NULL) {
    if (data <= left->data) {
        // here at the first time 
        tmp = left->left;
    } else {
        // or here 
        tmp = left->right;
    }
    // tmp will be set to null and the exection will end immediately
}