Create 0513-find-bottom-left-tree-value.kt

Author: a93a

Diff for: kotlin/0513-find-bottom-left-tree-value.kt

@@ -0,0 +1,14 @@
+class Solution {
+    fun findBottomLeftValue(root: TreeNode?): Int {
+        var cur = root
+        with (LinkedList<TreeNode?>()) {
+            addLast(root)
+            while (isNotEmpty()) {
+                cur = removeFirst()
+                cur?.right?.let { addLast(it) }
+                cur?.left?.let { addLast(it) }
+            }
+        }
+        return cur?.`val` ?: 0
+    }
+}