mrlonely

> leetcode: 0.17.0 node:v12.19.0 > > command 'leetcode.signin' not found > > SyntaxError: Unexpected token Error: Command "node "c:\Users\Administrator.vscode\extensions\leetcode.vscode-leetcode-0.17.0\node_modules\vsc-leetcode-cli\bin\leetcode",plugin,-i,company" failed with exit code "1". me too, did you solve it?

> I am also facing this issue with next-js version 15. Is there any solution ?? [@mameikagou](https://github.com/mameikagou) [@ixugo](https://github.com/ixugo) Nothing you can do，except drop the version.

It maybe because of the "cloneElement" uses an instance for a component instead of recreating a component instance every render.

I really need this , please

解答：左右视图就是层序遍历的每层的第一或者最后一个节点; ```js var rightSideView = function(root) { if(!root){ return []; } let stack = []; let res = []; stack.push(root) while(stack.length>0){ let len = stack.length; // 对每一层进行处理 for(let i=0;i