2800 - 2899
Solutions categorised by Problem IDs
2810 - Faulty KeyboardSimulate a keyboard that reverses the text typed so far whenever the trigger character appears.2811 - Check if it is Possible to Split ArrayDetermine whether an array admits all required splits by checking its length and the sums of neighboring pairs.2815 - Max Pair Sum in an ArrayFind the largest pair sum whose two numbers share the same maximum decimal digit.2839 - Check if Strings Can be Made Equal With Operations ICheck whether the allowed swaps can make two four-character strings equal by testing the possible rearrangements.2840 - Check if Strings Can be Made Equal With Operations IIDecide whether two strings can match after distance-two swaps by comparing sorted characters at even and odd positions.2841 - Maximum Sum of Almost Unique SubarrayMaximize the sum of a fixed-length subarray with enough distinct values by tracking frequencies in a sliding window.2843 - Count Symmetric IntegersCount even-length integers whose two halves have equal digit sums, either directly or with precomputed prefix counts.2859 - Sum of Values at Indices With K Set BitsSum array values at indices whose binary representations contain exactly k set bits.2864 - Maximum Odd Binary NumberRearrange binary digits into the largest odd number by reserving one trailing one and placing the remaining ones first.2873 - Maximum Value of an Ordered Triplet IMaximize the ordered triplet expression by testing valid index triples or tracking the best earlier choices.2874 - Maximum Value of an Ordered Triplet IIMaximize the ordered triplet value by carrying forward the best earlier value and difference for each possible final element.
