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- uncommonFromSentences(java.lang.String,java.lang.String) - function in g0801_0900.s0884_uncommon_words_from_two_sentences.Solution
- UndergroundSystem - class in g1301_1400.s1396_design_underground_system
- unfix(java.lang.Integer) - function in g2101_2200.s2166_design_bitset.Bitset
- unfollow(java.lang.Integer,java.lang.Integer) - function in g0301_0400.s0355_design_twitter.Twitter
- unhappyFriends(java.lang.Integer,kotlin.Array,kotlin.Array) - function in g1501_1600.s1583_count_unhappy_friends.Solution
- union(java.lang.Integer,java.lang.Integer) - function in g0701_0800.s0721_accounts_merge.Solution.UnionFind
- union(java.lang.Integer,java.lang.Integer,kotlin.IntArray,kotlin.IntArray) - function in g1501_1600.s1579_remove_max_number_of_edges_to_keep_graph_fully_traversable.Solution
- uniqueLetterString(java.lang.String) - function in g0801_0900.s0828_count_unique_characters_of_all_substrings_of_a_given_string.Solution
- uniqueMorseRepresentations(kotlin.Array) - function in g0801_0900.s0804_unique_morse_code_words.Solution
- uniqueOccurrences(kotlin.IntArray) - function in g1201_1300.s1207_unique_number_of_occurrences.Solution
- uniquePaths(java.lang.Integer,java.lang.Integer) - function in g0001_0100.s0062_unique_paths.Solution
- uniquePathsIII(kotlin.Array) - function in g0901_1000.s0980_unique_paths_iii.Solution
- uniquePathsWithObstacles(kotlin.Array) - function in g0001_0100.s0063_unique_paths_ii.Solution
- unlock(java.lang.Integer,java.lang.Integer) - function in g1901_2000.s1993_operations_on_tree.LockingTree
- unreserve(java.lang.Integer) - function in g1801_1900.s1845_seat_reservation_manager.SeatManager
- update(java.lang.Integer,java.lang.Integer) - function in g0301_0400.s0307_range_sum_query_mutable.NumArray
- update(java.lang.Integer,java.lang.Integer) - function in g2001_2100.s2034_stock_price_fluctuation.StockPrice
- updateBoard(kotlin.Array,kotlin.IntArray) - function in g0501_0600.s0529_minesweeper.Solution
- updateMatrix(kotlin.Array) - function in g0501_0600.s0542_01_matrix.Solution
- updateSubrectangle(java.lang.Integer,java.lang.Integer,java.lang.Integer,java.lang.Integer,java.lang.Integer) - function in g1401_1500.s1476_subrectangle_queries.SubrectangleQueries
- upgrade(java.lang.Integer,java.lang.Integer) - function in g1901_2000.s1993_operations_on_tree.LockingTree