翔宇Shawn
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用LINQ全排列: public static IEnumerable<IEnumerable<T>> P<T>(IEnumerable<T> list) {if (list.Count() == 1)return new List<IEnumerable<T>> { list };return list.Select((a, i1) => P(list.Where((b, i2) => i2 != i1)).Select(b => (new List<T> { a }).Union(b))).SelectMany(c => c);} 展开全文原微博 翔宇Shawn
斐斐说要吃pizza,所以我们来了cpk. 原微博