Sorting algorithms/Cycle sort: Difference between revisions
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.swap: do p=p while x==@.p; end; parse value @.p x with x @.p; w=w+1; return</lang> |
.swap: do p=p while x==@.p; end; parse value @.p x with x @.p; w=w+1; return</lang> |
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'''output''' is identical to the 2<sup>nd</sup> version. |
'''output''' is identical to the 2<sup>nd</sup> version. |
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=={{header|Ring}}== |
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<lang ring> |
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# Project : Sorting algorithms/Cycle sort |
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# Date : 2018/02/17 |
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# Author : Gal Zsolt (~ CalmoSoft ~) |
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# Email : <calmosoft@gmail.com> |
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array = [0, 1, 2, 2, 2, 2, 1, 9, 3, 5, 5, 8, 4, 7, 0, 6] |
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seearray(array) |
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writes = cyclesort(array) |
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see "after sorting with " + writes + " writes :" + nl |
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seearray(array) |
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see nl |
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array2 = [38, 119, 38, 33, 33, 28, 24, 101, 108, 120, 99, 59, 69, 24, 117, 22, 90, 94, 78, 75] |
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seearray(array2) |
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writes = cyclesort(array2) |
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see "after sorting with " + writes + " writes :" + nl |
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seearray(array2) |
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func cyclesort(array) |
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length = len(array) |
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if length = 0 |
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return 0 |
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ok |
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writes = 0 |
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for cyclestart = 1 to len(array) - 1 |
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item = array[cyclestart] |
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position = cyclestart |
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for i = cyclestart + 1 to len(array) |
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if array[i] < item |
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position = position + 1 |
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ok |
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next |
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if position = cyclestart |
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loop |
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ok |
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while item = array[position] |
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position = position+ 1 |
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end |
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temp = item |
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item = array[position] |
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array[position] = temp |
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writes = writes + 1 |
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while position != cyclestart |
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position = cyclestart |
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for i = cyclestart + 1 to len(array) |
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if array[i] < item |
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position = position + 1 |
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ok |
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next |
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while item = array[position] |
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position = position + 1 |
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end |
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temp = item |
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item = array[position] |
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array[position] = temp |
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writes = writes + 1 |
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end |
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next |
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return writes |
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func seearray(array) |
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for i = 1 to len(array) |
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see string(array[i]) + " " |
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next |
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see nl |
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</lang> |
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Output: |
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<pre> |
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0 1 2 2 2 2 1 9 3 5 5 8 4 7 0 6 |
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after sorting with 10 writes : |
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0 0 1 1 2 2 2 2 3 4 5 5 6 7 8 9 |
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38 119 38 33 33 28 24 101 108 120 99 59 69 24 117 22 90 94 78 75 |
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after sorting with 19 writes : |
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22 24 24 28 33 33 38 38 59 69 75 78 90 94 99 101 108 117 119 120 |
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</pre> |
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=={{header|Ruby}}== |
=={{header|Ruby}}== |
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