Ruddy turnstone migratory bird, breeding in northern parts of Eurasia and North America and flying south to winter on coastlines almost worldwide. It is the only species of turnstone in much of its range and is often known simply as turnstone. It is a fairly small and stocky bird, long with a wingspan of and a weight of . The dark, wedge-shaped bill is long and slightly upturned. The legs are fairly short at and are bright orange. In all seasons, the plumage is dominated by a harlequin-like pattern of black and white. Breeding birds have reddish-brown upper parts with black markings.
Tournament sort in Haskell, based on Scheme code by Stepanov and Kershenbaum. Tournament sort Tournament sort is a sorting algorithm. It improves upon the naive selection sort by using a priority queue to find the next element in the sort. In the naive selection sort, it takes O("n") operations to select the next element of "n" elements; in a tournament sort, it takes O(log "n") operations (after building the initial tournament in O("n")). Tournament sort is a variation of heapsort. Tournament replacement selection sorts are used to gather the initial runs for external sorting algorithms. Conceptually, an external file is read and