mergetest.cpp

Think in C++ 第二版源码

//: C21:MergeTest.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Test merging in sorted ranges
#include <algorithm>
#include "PrintSequence.h"
#include "Generators.h"
using namespace std;

int main() {
  const int sz = 15;
  int a[sz*2] = {0};
  // Both ranges go in the same array:
  generate(a, a + sz, SkipGen(0, 2));
  generate(a + sz, a + sz*2, SkipGen(1, 3));
  print(a, a + sz, "range1", " ");  
  print(a + sz, a + sz*2, "range2", " ");
  int b[sz*2] = {0}; // Initialize all to zero
  merge(a, a + sz, a + sz, a + sz*2, b);
  print(b, b + sz*2, "merge", " ");
  // set_union is a merge that removes duplicates
  set_union(a, a + sz, a + sz, a + sz*2, b);
  print(b, b + sz*2, "set_union", " ");
  inplace_merge(a, a + sz, a + sz*2);
  print(a, a + sz*2, "inplace_merge", " ");
} ///:~