#include <iostream> using namespace std; /*值传递,局部变量a和b的值确实在调用swap0时变化了,当结束时,他们绳命周期结束*/ void swap0(int a, int b) { int tem = a; a = b; b = a; } /*没有初始化指针就开始用,该函数是有问题的*/ void swap1(int *a, int *b) { int *tem; /*注意tem没有分配内存*/ *tem = *a; *a = *b; *b = *…
C语言中要实现交换两个数的值,可以有很多种方法,具体如下所述. 不使用中间变量: // 异或, a^=b^=a^=b; a ^= b; b ^= a; a ^= b; // 加减 a = a + b; b = a - b; a = a - b; // 乘除 a = a * b; b = a / b; b = a/ b; 使用中间变量: // 需临时空间 temp = a; a = b; b = temp; 正如你所想的那样,上面所示代码只是描述了交换两个数的值的思想,在你实际使用时,还有诸多地方…
例子: 759+674 1)不考虑进位: 323 2)只考虑进位:1110 3)两者之和:1433 递归求解c package Hard; /** * Write a function that adds two numbers. You should not use + or any arithmetic operators. 译文: 写一个Add函数求两个数的和,不能使用+号或其它算术运算符. * */ public class S18_1 { public static int add…
Given an array of integers, return indices of the two numbers such that they add up to a specific target.You may assume that each input would have exactly one solution, and you may not use the same element twice.Example:Given nums = [2, 7, 11, 15], t…