1325. Delete Leaves With a Given Value.cpp

class Solution {
public:
    TreeNode* removeLeafNodes(TreeNode* root, int target) {
        if (root == nullptr)
            return nullptr;
        root->left = removeLeafNodes(root->left, target);
        root->right = removeLeafNodes(root->right, target);
        return root->left == root->right && root->val == target ? nullptr : root;
    }
};