Category Archives: recursion

sum-of-left-leaves

Posted on October 19, 2022 by Hieu Nguyen

package us.inest.app.dcp.recursion; import us.inest.app.dcp.tree.TreeNode; public class SumOfLeftLeaves { public static int sumOfLeftLeaves(TreeNode root) { // base case if (root == null) { return 0; } // left child is a leaf node if (root.left != null && root.left.left == null … Continue reading →

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