Method diameterOfBinaryTree

TreeDiameter.java:3–10

(TreeNode root)

class Solution {
    int maxi=0;
    public int diameterOfBinaryTree(TreeNode root) {
        
        if(root == null) return 0;
        int ans[]=new int[1];
        findDiameter(root,ans);
        return ans[0];
        
    }
    public int findDiameter(TreeNode root, int maxi[])
    {
        if(root == null) return 0;