6 lines
730 B
Plaintext
6 lines
730 B
Plaintext
Bucket sort is mainly useful when input is uniformly distributed over a range. For example, consider the following problem.
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Sort a large set of floating point numbers which are in range from 0.0 to 1.0 and are uniformly distributed across the range. How do we sort the numbers efficiently?
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A simple way is to apply a comparison based sorting algorithm. The lower bound for Comparison based sorting algorithm (Merge Sort, Heap Sort, Quick-Sort .. etc) is Ω(n Log n), i.e., they cannot do better than nLogn.
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Can we sort the array in linear time? Counting sort can not be applied here as we use keys as index in counting sort. Here keys are floating point numbers.
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The idea is to use bucket sort. Following is bucket algorithm.
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