Function isSameTree

javascript/0572-subtree-of-another-tree.js:125–138

(root, subRoot)

};

function isSameTree(root, subRoot) {
    if (!root && !subRoot) {
        return true;
    } else if (!root || !subRoot) {
        return false;
    } else if (root.val !== subRoot.val) {
        return false;
    }

    const leftRes = isSameTree(root.left, subRoot.left);
    const rightRes = isSameTree(root.right, subRoot.right);

    return leftRes && rightRes;
}