标签:interview
// See http://www.hawstein.com/posts/19.1.html // 19.1 Write a function to swap a number in place without temporary variables. class CC19_1 { void swap() { int a; int b; a = a + b; b = a - b; a = a - b; } // or void swap() { int a; int b; a = a ^ b; b = a ^ b; a = a ^ b; } }
标签:interview
原文地址:http://7371901.blog.51cto.com/7361901/1588252