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Divide and Conquer is a powerful algorithmic technique that breaks down a problem into smaller, more manageable sub-problems, solves each one independently, and then combines their results to form the final solution. This approach is exemplified in algorithms such as Merge Sort and QuickSort. It is highly efficient in solving complex problems, offering improved time complexity compared to iterative or brute force methods. Dynamic programming, though similar, involves solving sub-problems and storing their results to avoid redundant calculations.
A captain can navigate a ship at a speed of 5 km/hr in calm waters. With a current moving at a speed of 3 km/hr, he takes 12 hours longer to travel 'd' ...
A steamer covers 80 km in 5 hr. in still water. If the speed of the steamer in still water is 50% more than that of the stream, then time is required fo...
A boatman takes 9 hours to cover 64 km downstream and 60 km upstream. If the ratio of his speed downstream to his speed upstream is 4:3, what is the spe...
A boat running downstream covers a distance of 39 km in 3 hrs and covering the same distance upstream in 13 hrs. What is the speed of a boat in still wa...
A boat takes 7 hours to cover 259 km upstream and 9 hours to cover 477 km downstream. Find the time taken by the boat to cover 645 km upstream and 660 k...
A man can row 8 km/hr in still water. If the speed of the current is 2 km/hr, it takes 5 hours more in upstream than in the downstream for the same dist...
A boat can cover a distance of 210 km downstream with the current in 5 hours. It takes an additional 2.5 hours to return the same...
What is the speed of boat in still water?
Statement I: It takes the boat thrice as much time to row up than as to row down the same distance in...
A man can row at 3 kmph in still water. If the velocity of current is 2 kmph and it takes him 6 hour to row to a place and come back, how far is the place?