我有大量的布尔值,我想将它们打包/解压缩到uint或类似值。我怎么能在C#中做到这一点?
答案 0 :(得分:4)
您可以使用BitArray
类将bool
数组转换为int
数组:
int[] theIntArray = new int[(theBoolArray.Length + 31) / 32];
new BitArray(theBoolArray).CopyTo(theIntArray, 0);
答案 1 :(得分:1)
您需要建立一系列位掩码(BIT0到BIT31,例如2 ^ 0和2 ^ 32),然后使用按位运算符对它们进行操作:
// Initialise
byte value = 240; // 11110000
// Clear bit 7
value &= 127; // Result = 112 = 01110000
// Set bit 0
value |= 1; // Result = 113 = 01110001
// Toggle bits 1, 3, 5 and 7
value ^= 170; // Result = 219 = 11011011
或者您可以使用BitArray:
BitArray myBitArray = new BitArray(5); // Setup with length 5
myBitArray.SetAll(false); // Set all to false
myBitArray.Set(3, true); // Set element 3 on
bool is3Set = myBitArray.Get(3); // returns true
bool is4Set = myBitArray.Get(4); // returns false
在C / C ++中,您可以这样编写位掩码:
enum Bits
{
BIT0 = 0x00000001,
BIT1 = 0x00000002,
BIT2 = 0x00000004,
BIT3 = 0x00000008,
BIT4 = 0x00000010,
BIT5 = 0x00000020,
BIT6 = 0x00000040,
BIT7 = 0x00000080,
BIT8 = 0x00000100,
BIT9 = 0x00000200,
BIT10 = 0x00000400,
BIT11 = 0x00000800,
BIT12 = 0x00001000,
BIT13 = 0x00002000,
BIT14 = 0x00004000,
BIT15 = 0x00008000,
BIT16 = 0x00010000,
BIT17 = 0x00020000,
BIT18 = 0x00040000,
BIT19 = 0x00080000,
BIT20 = 0x00100000,
BIT21 = 0x00200000,
BIT22 = 0x00400000,
BIT23 = 0x00800000,
BIT24 = 0x01000000,
BIT25 = 0x02000000,
BIT26 = 0x04000000,
BIT27 = 0x08000000,
BIT28 = 0x10000000,
BIT29 = 0x20000000,
BIT30 = 0x40000000,
BIT31 = 0x80000000
};
答案 2 :(得分:0)
这不完全相同,但请检查这个将布尔数组转换为字节的答案: