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2. /** * A tournament tree is a binary tree * where the parent is the minimum of the two children. * Given a tournament tree find the second minimum value in the tree. * A node in the tree will always have 2 or 0 children. * Also all leaves will have distinct and unique values. * 2 * / \ * 2 3 * / \ | \ * 4 2 5 3 * * In this given tree the answer is 3. */ class Node { Integer value; Node left, right; Node(Integer value, Node left, Node right) { this.value = value; this.left = left; this.right = right; } } class Solution { /** * This should return the second minimum * int value in the given tournament tree */ public static Integer secondMin(Node root) { } }
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Senior Software Engineer

Interviewed at LinkedIn

3.8★
Apr 5, 2017

2. /** * A tournament tree is a binary tree * where the parent is the minimum of the two children. * Given a tournament tree find the second minimum value in the tree. * A node in the tree will always have 2 or 0 children. * Also all leaves will have distinct and unique values. * 2 * / \ * 2 3 * / \ | \ * 4 2 5 3 * * In this given tree the answer is 3. */ class Node { Integer value; Node left, right; Node(Integer value, Node left, Node right) { this.value = value; this.left = left; this.right = right; } } class Solution { /** * This should return the second minimum * int value in the given tournament tree */ public static Integer secondMin(Node root) { } }

1. Given the sample: id, status 1, active 2, active 3, active 4, pending 5, expired 6, expired 7, expired 8, pending Pull the unique statuses that show up consecutively 3 times, e.g. from the sample, the output would be 'active', 'expired'. 2. Given the sample: employee, in_out, time A, IN, 6:00 B, IN, 7:00 A, OUT, 8:00 C, IN, 9:30 A, IN, 9:00 A, OUT, 10:00 B, OUT, 11:00 C, OUT, 10:00 Determine which employees are in the building at 10:30.
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Senior Data Engineer

Interviewed at Amazon

3.5★
Jan 7, 2022

1. Given the sample: id, status 1, active 2, active 3, active 4, pending 5, expired 6, expired 7, expired 8, pending Pull the unique statuses that show up consecutively 3 times, e.g. from the sample, the output would be 'active', 'expired'. 2. Given the sample: employee, in_out, time A, IN, 6:00 B, IN, 7:00 A, OUT, 8:00 C, IN, 9:30 A, IN, 9:00 A, OUT, 10:00 B, OUT, 11:00 C, OUT, 10:00 Determine which employees are in the building at 10:30.

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