IBM Interview Question Bank
IBM's recent technical screens are dominated by auto-triggered HackerRank online assessments for entry-level, intern, full-stack, backend, AI, and .NET roles. The question mix is mostly easy-to-medium data structures, sliding-window, interval, graph-connectivity, and small frontend/CSS tasks, while Red Hat / AI-infrastructure loops add live coding around inference kernels, Kubernetes controllers, and DevOps fundamentals.
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Minimum Nondecreasing IncrementMaximize Revenue from VM InventoryCount Pythagorean Distance Triples in a TreeSum of XOR Values Over All Array PairsMinimum Replacements to Eliminate Adjacent Equal CharactersMaximum Revenue from Renting Highest-Stock VMsDesign Authentication ManagerMinimum Replacements to Avoid Equal Adjacent CharactersMaximum Revenue from VM RentalsMinimum Deletions to Eliminate Adjacent Equal CharactersCount strictly decreasing-by-1 subarrays of length at least 2Count numbers of the form 3^x * 5^y within a rangeReverse Last Two Characters with a SpaceMinimum Number of Meeting Rooms (Intervals as List<List<Integer>> )Get Minimum IncrementGet Minimum OperationsMinimum Hits NeededMaximum Increment to Make Array AscendingFind Length of Longest Bitonic SubarrayFind Common Keys in Product RecommendationsOptimize Streaming Platform SessionsSearch Values in a Binary Search TreeRetrieve and Filter Elite Clubs from Football Teams APIGroup Words by Character FrequencyReturn the Last Lexicographical SubstringCompare Products from Three Separate ListsFind the Largest Subset of a StringMerge 2 ArraysFind Missing IntegerMaximize Integer with Swap