<kotlin - how to modify an integer variable> newbi...

# stackoverflow

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kotlin - how to modify an integer variable
newbie in kotlin and trying to solve https://leetcode.com/problems/sum-root-to-leaf-numbers/ with it. hitting a kotlin constraint that declared val are final
/**
* Example:
* var ti = TreeNode(5)
* var v = ti.val
* Definition for a binary tree node.
* class TreeNode(var `val`: Int) {
* var left: TreeNode? = null
* var right: TreeNode? = null
* }
*/
class Solution {
fun...