Function isRootBalanced

javascript/0110-balanced-binary-tree.js:60–65

(root)

};

var isRootBalanced = (root) => {
    const isBaseCase = root === null;
    if (isBaseCase) return [-1, true];

    return dfs(root);
};

var dfs = (root) => {
    const [left, isLeftBalanced] = isRootBalanced(root.left);