Created
September 3, 2018 18:58
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| def merge(left, right): | |
| r = [] | |
| while any(left) and any(right): | |
| if left[0] < right[0]: | |
| r.append(left.pop(0)) | |
| else: | |
| r.append(right.pop(0)) | |
| if not left and any(right): | |
| r.append(right.pop(0)) | |
| if not right and any(left): | |
| r.append(left.pop(0)) | |
| return r | |
| def mergeSort(arr): | |
| size = len(arr) | |
| if size < 2: | |
| return arr | |
| mid = size // 2 | |
| return merge(mergeSort(arr[:mid]), mergeSort(arr[mid:])) | |
| arr = [7, 3, 2, 4] | |
| print('orig:, ', arr) | |
| print('result:, ', mergeSort(arr)) | |
| arr = [7, 3, 2, 4, 1] | |
| print('orig:, ', arr) | |
| print('result:, ', mergeSort(arr)) |
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