1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <algorithm> 11 12 // template<RandomAccessIterator Iter> 13 // requires ShuffleIterator<Iter> 14 // void 15 // random_shuffle(Iter first, Iter last); 16 17 #include <algorithm> 18 #include <cassert> 19 20 int main() 21 { 22 int ia[] = {1, 2, 3, 4}; 23 int ia1[] = {1, 4, 3, 2}; 24 int ia2[] = {4, 1, 2, 3}; 25 const unsigned sa = sizeof(ia)/sizeof(ia[0]); 26 std::random_shuffle(ia, ia+sa); 27 assert(std::equal(ia, ia+sa, ia1)); 28 std::random_shuffle(ia, ia+sa); 29 assert(std::equal(ia, ia+sa, ia2)); 30 } 31
