Backtracking
103 / 170BacktrackingLesson 10 of 10About 50 min
Two problems rebuilt cold, plus the checklist that determines any backtracking solution.
A search for all distinct combinations from a list with repeated values returns duplicates. Sorting is present and the copy is correct. Which decision is most likely wrong?
You have solved this one before. Rebuild it from scratch without looking at your old submission. If the approach does not come back within a few minutes, that is the signal that it needs another pass.
You have solved this one before. Rebuild it from scratch without looking at your old submission. If the approach does not come back within a few minutes, that is the signal that it needs another pass.