Are standard hash functions like MD5 or SHA1 quaranteed to be unique for small input (4 bytes)?

标准的散列函数，如MD5或SHA1保障是小的输入唯一的（4字节）？

youdao

Are standard hash functions like MD5 or SHA1 quaranteed to be unique for small input (4 bytes)?

标准的散列函数，如MD5或SHA1保障是小的输入唯一的（4字节）？

youdao