Oplysninger om | engelsk ord QUICKSELECT

Eksempler på brug af QUICKSELECT i en sætning

• In computer science, quickselect is a selection algorithm to find the kth smallest element in an unordered list, also known as the kth order statistic.
• A variant of quickselect, the median of medians algorithm, chooses pivots more carefully, ensuring that the pivots are near the middle of the data (between the 30th and 70th percentiles), and thus has guaranteed linear time –.
• Introselect works by optimistically starting out with quickselect and only switching to a worst-case linear-time selection algorithm (the Blum-Floyd-Pratt-Rivest-Tarjan median of medians algorithm) if it recurses too many times without making sufficient progress.
• In computer science, the median of medians is an approximate median selection algorithm, frequently used to supply a good pivot for an exact selection algorithm, most commonly quickselect, that selects the kth smallest element of an initially unsorted array.

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