我在 php 中编写了这个函数来执行 Gray Code数量:
function c_gray($num){
$bin=decbin($num); //binary of the number
$xor=array();
$xor[]=reset(str_split($bin)); //Get the first bit of binary and put it as the first element of $xor array
for($i=0;$i<strlen($bin)-1;$i++){ //for any bit of the binary
echo $xor[]=$bin[$i] ^ $bin[$i+1]; //do the xor with the next bit of binary and put the result in array $xor
}
$res=implode($xor); //put hte final code in $res
return $res;
}
问题出在异或。如果我打印 $xor
数组,则只有我用 $xor[]=reset(str_split($bin));
我错在哪里?
最佳答案
您的字符串元素未隐式转换为整数...尝试:
function c_gray($num){
$bin = decbin($num); //binary of the number
$xor = array();
$xor[] = reset(str_split($bin)); //Get the first bit of binary and put it as the first element of $xor array
for($i=0;$i < strlen($bin)-1; $i++){ //for any bit of the binary
$xor[] = (int)$bin[$i] ^ (int)$bin[$i+1]; //do the xor with the next bit of binary and put the result in array $xor
}
$res = implode($xor); //put hte final code in $res
return $res;
}
关于PHP 格雷码 - 异或错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10937148/