C# 如何将 short[] 转换为 bool[]


short[] sBuf = new short[2];
sBuf[0] = 1;
sBuf[1] = 2;
bool[] bBuf = new bool[sBuf.Length * 16];
Buffer.BlockCopy(sBuf, 0, bBuf, 0, sBuf.Length * 2);
Desired result value  
sBuf[0] = 1
bBuf[0] = true, bBuf[1] = false, bBuf[2] = false, bBuf[3] = false...
sBuf[0] = 2
bBuf[16] = false, bBuf[17] = true, bBuf[18] = false, bBuf[19] = false...

但无法正确转换。
我想从短 [] 转换为布尔 [],但我不知道怎么做。

假设每个bool都表示其相应short的位(这大概就是将大小乘以 16 的原因(,您可以按如下方式进行转换:

bBuf = sBuf
    .SelectMany(s => Enumerable.Range(0, 16).Select(i => (s & (1<<i)) != 0))
    .ToArray();

这个想法是为每个short构造16个布尔值,方法是调用Enumerable.Range,用(1 << i)屏蔽数字,并将结果与零进行比较。

Convert.ToBoolean 的 msdn 页面中,它说每个0值都将转换为 false,每个非0值将转换为true

bool[] bBuf = new bool[sBuf.Length];
for(int i = 0; i < sBuf.Length; ++i )
{
    bBuf[i] = Convert.ToBoolean(sBuf[i]);
}

编辑:
根据short值中设置的位设置bool[],您可以使用:

const int BITS_PER_BYTE = 8; // amount of bits per one byte
int elementBitsSize = sizeof(short) * BITS_PER_BYTE; // size in bits of one element in array
bool[] bBuf = new bool[sBuf.Length * elementBitsSize]; // new array size
// iterate through each short value
for ( int i = 0; i < sBuf.Length; ++i )
{
    // iterate through bits in that value
    for( int j = 0; j < elementBitsSize; ++j )
    {
        // assign new value
        bBuf[j + i * elementBitsSize] = Convert.ToBoolean(sBuf[i] & (1 << j));
    }
}

工作示例

// Convert short to bool
bool[] bBuf = Array.ConvertAll(sBuf, n => n != 0);
// Convert short to bit representation bool array
bool[][] bBuf= Array.ConvertAll(arr, n =>
{
    bool[] bits = new bool[16];
    for (int index = 0; index < 16; index++)
    {
        bits[index] = (n & (1 << index)) > 0;
    }
    return bits;
});

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