c语言算法n-1 的相关内容

文章 2024-06-21 来自：开发者社区

C语言----判断n是否是2的次方数，利用到按位与&，算法n&(n-1)

//写一个代码，判断n是否是2的次方数 //if(n&(n-1))==0 /* 2的0次方是1---二进制1 2的1次方是2---二进制10 2的2次方是4---二进制100 2的一次方-1是1---二进制是1 2的二次方-1是3---二进制是11 2的三次方-1是7---二进制是111 n与n-1 按位与后&是0就是0，两个1才是1 所以if(n&(n-1))==...

文章 2023-07-30 来自：开发者社区

C语言：使用普通方法和二分查找算法（折半查找算法）在一个有序数组中查找具体的某个数字n-1

思路一：普通方法（逻辑简单，在无序数组中也可以使用，但效率较低，需要逐个查找）总体思路：（一）. 设置初始数组，生成相关变量；（二）. 使用for循环在数组中进行逐个查找，...

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更新时间 2024-06-22 11:53:46

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