Turnstone thus a common sight on coasts almost everywhere in the world. In breeding plumage, this is a showy bird, with a black-and-white head, chestnut back, white underparts and red legs. The drabber winter plumage is basically brown above and white below. This is a generally tame bird and is an opportunist feeder. Unlike most waders, it will scavenge, and has a phenomenal list of recorded food items, including human corpses and coconut. The call is a staccato "tuck- tuck- tuck". The ruddy turnstone is one of the species to which the "Agreement on the Conservation of African-Eurasian Migratory Waterbirds" (AEWA)
Block sort Block sort Block sort, or block merge sort, is a sorting algorithm combining at least two merge operations with an insertion sort to arrive at in-place stable sorting. It gets its name from the observation that merging two sorted lists, and , is equivalent to breaking into evenly sized "blocks", inserting each block into under special rules, and merging pairs. One practical algorithm for O(log n) in place merging was proposed by Pok-Son Kim and Arne Kutzner in 2008. The outer loop of block sort is identical to a bottom-up merge sort, where each "level" of the sort merges pairs