将二进制数组转换为Char Java [英] Convert Binary Array to Char Java

问题描述

我有这个二进制数组：

int[] bitArray = {
    0,1,0,1,0,1,0,0,0,1,1,0,1,0,0,0,0,1,1,0,0,1,0,1,0,0,1,0,0,0,0,0,0,1,1,1,0,0,1,1,
    0,1,1,1,0,1,0,1,0,1,1,0,1,1,1,0,0,0,1,0,0,0,0,0,0,1,1,0,1,0,0,1,0,1,1,1,0,0,1,1,
    0,0,1,0,0,0,0,0,0,1,1,0,1,0,0,1,0,1,1,0,1,1,1,0,0,0,1,0,0,0,0,0,0,1,1,1,0,1,0,0,
    0,1,1,0,1,0,0,0,0,1,1,0,0,1,0,1,0,0,1,0,0,0,0,0,0,1,1,1,0,0,1,1,0,1,1,0,1,0,1,1,
    0,1,1,1,1,0,0,1,};

它的意思是：太阳在天空中
如何转换 int 二进制数组转换为 char ？

It makes the phrase: The sun is in the sky How would you convert the int binary array to a char?

推荐答案

每八位组成一个字符。您可以对位进行循环并每8个累加一次：

Every eight bits make up a char. You could just loop over the bits and accumulate every eight together:

int[] bitArray = {0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1,};
char[] chars = new char[bitArray.length / 8];
for (int i = 0; i < chars.length; ++i) {
    int c = 0;
    for (int j = i * 8; j < (i + 1) * 8; ++j) {
        c = c << 1;
        c += bitArray[j];
    }
    chars[i] = (char)c;
}

String s = new String(chars);
System.out.println(s);

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