Company
American Express
27 problems currently represented in the catalog.
3SumMEDIUMBest Time to Buy and Sell StockEASYCheck If It Is a Good ArrayHARDDivide an Array Into Subarrays With Minimum Cost IEASYDivide an Array Into Subarrays With Minimum Cost IIHARDEqual Sum Arrays With Minimum Number of OperationsMEDIUMFind a Value of a Mysterious Function Closest to TargetHARDFind N Unique Integers Sum up to ZeroEASYIsomorphic StringsEASYLinked List Cycle IIMEDIUMLongest Common PrefixEASYLongest Substring Without Repeating CharactersMEDIUMMaximize the Topmost Element After K MovesMEDIUMMaximum Area of Two Non-Overlapping Square SubmatricesMEDIUMMaximum Equal FrequencyHARDMaximum XOR After OperationsMEDIUMMerge IntervalsMEDIUMMerge k Sorted ListsHARDMinimum Deletions to Make Character Frequencies UniqueMEDIUMMinimum Moves to Spread Stones Over GridMEDIUMPercentage of Letter in StringEASYPermutationsMEDIUMRotate ArrayMEDIUMSliding Window MaximumHARDTwo SumEASYUgly Number IIIMEDIUMValid AnagramEASY
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