//MergeTest.cpp #include <algorithm> #include "PrintSequence.h" #include "Generators.h" using namespace std; //使用以下方法必须是已排序的序列 int main() { const int SZ = 15; int a[SZ * 2] = {0}; generate(a, a + SZ, SkipGen(0, 2)); a[3] = 4; a[4] = 4; generate(a + SZ, a + SZ*2, SkipGen(1, 3)); print(a, a + SZ, "range1", " "); print(a + SZ, a + SZ*2, "rage2", " "); print(a, a + SZ*2, "a", " "); int b[SZ * 2] = {0}; //将两个序列中的元素以升序的顺序复制到b,是稳定的运算 merge(a, a + SZ, a + SZ, a + SZ*2, b); print(b, b + SZ*2, "merge", " "); for(int i = 0; i < SZ*2; i++) b[i] = 0; //它与merge的调用有相同的标识符及类似的行为,除了它从第二个集合中删除副本 int *end = set_union(a, a + SZ, a + SZ, a + SZ*2, b);//它 print(b, end, "set_union", " "); //将相同序列中已排好序的两部分的元素合并,合并后也是有序的序列 inplace_merge(a, a + SZ, a + SZ*2); print(a, a + SZ*2, "inplace_merge", " "); system("pause"); return 0; } /* 结果: range1: 0 2 4 4 4 10 12 14 16 18 20 22 24 26 28 rage2: 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 a: 0 2 4 4 4 10 12 14 16 18 20 22 24 26 28 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 merge: 0 1 2 4 4 4 4 7 10 10 12 13 14 16 16 18 19 20 22 22 24 25 26 28 28 31 34 37 40 43 set_union: 0 1 2 4 4 4 7 10 12 13 14 16 18 19 20 22 24 25 26 28 31 34 37 40 43 inplace_merge: 0 1 2 4 4 4 4 7 10 10 12 13 14 16 16 18 19 20 22 22 24 25 26 28 28 31 34 37 40 43 */