Univalue Tree Count
A univalue tree is a tree where all nodes under it have the same value.
Coding Exercise Posts - page 20 of 43
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Unique People in Contact List
You are given a two-dimensional list of strings contacts. Each element contacts[i] represents the list of emails for contact i. Contact i is considered a dup...
Unique Occurrences
Given a list of integers nums, return whether the number of occurrences of every value in the array is unique.
Unique Integers in Sorted List
Given a list of sorted integers nums return the number of unique integers in the list.
Unique Fractions
You are given a list of lists fractions where each list contains [numerator, denominator] which represents the number numerator / denominator.
Unique Ab Strings
You are given a string s of "a" and "b"s. "a"s can stay "a" or turn into "b", but "b"s can’t change.
Unidirectional Word Search
Given a two-dimensional matrix of characters board and a string target, return whether the target can be found in the matrix by going left-to-right, or up-to...
Ugly Number
Given an integer n, return whether its prime factors only include 2, 3 or 5.
Uber Pool
You are given a two-dimensional integer list requested_trips containing [start_x, end_x, num_passengers], and an integer capacity. Each requested trip asks t...
Two-Dimensional List Iterator
Implement an iterator of two-dimensional list of integers lists.
Twin Trees
Given two binary trees, root0 and root1, return whether their structure and values are equal.
Turtle of Wall Street
You are given a list of integers nums representing stock prices of a company in chronological order. You can buy at most one share of stock per day, but you ...