C++ int 到字节数组 [英] C++ int to byte array

问题描述

我的java代码中有这个方法，它返回给定int的字节数组:

I have this method in my java code which returns byte array for given int:

private static byte[] intToBytes(int paramInt)
{
     byte[] arrayOfByte = new byte[4];
     ByteBuffer localByteBuffer = ByteBuffer.allocate(4);
     localByteBuffer.putInt(paramInt);
     for (int i = 0; i < 4; i++)
         arrayOfByte[(3 - i)] = localByteBuffer.array()[i];
     return arrayOfByte;
}

谁能给我提示我如何将该方法转换为 C++?

Can someone give me tip how can i convert that method to C++?

推荐答案

Using std::vector:

#include <vector>
using namespace std;

vector<unsigned char> intToBytes(int paramInt)
{
     vector<unsigned char> arrayOfByte(4);
     for (int i = 0; i < 4; i++)
         arrayOfByte[3 - i] = (paramInt >> (i * 8));
     return arrayOfByte;
}

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