h4re https://blog.hatena.ne.jp/h4re/ ボケ防止 https://h4re.hateblo.jp/ XORを用いて一時変数なしでスワップ可能． #include <iostream> int main() { int a = 123; int b = 456; std::cout << a << ", " << b << std::endl; a ^= b; b ^= a; a ^= b; std::cout << a << ", " << b << std::endl; return 0; } 出力 123, 456 456, 123コード: https://wandbox.org/permlink/0KjN38XFXazPkOiA 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fh4re.hateblo.jp%2Fentry%2F2020%2F03%2F12%2F193150" title="XOR swap - ボケ防止" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2020-03-12 19:31:50 rich https://h4re.hateblo.jp/entry/2020/03/12/193150 1.0 100%