Always initialize your result variable as an empty string ( "" ) before starting your loop.
return result;
因此。这也是判题器会重点检查的部分——如果你用6位甚至8位，虽然也能完成任务，但不符合“用尽可能少的bit”的要求。 5-bit 是最优答案 。 83 8 create your own encoding codehs answers exclusive
Custom encodings help students practice string processing, bit manipulation, and algorithmic thinking. The "83-8" encoding maps input text into a compact numeric representation using base-83 digits grouped into 8-digit blocks. It is intentionally simple for classroom implementation while showing trade-offs between alphabet size, block length, and error detection.
: Isolating characters and determining how to alter them. Always initialize your result variable as an empty
Don't forget to include a space ( ' ' ) in your character set and map it to a unique 5-bit code.
这样一套编码方案可以覆盖绝大部分常见字符，而且实现方法与上面的5-bit案例完全一致，只需把编码表补充完整即可。 check community discussions on sites like
a repeating sequence of characters into a shortened format.
通过这道题，你实际上亲手体验了 的角色——选择用多少个bit，如何分配码值，如何保证编码与解码的唯一可逆性。这套能力在数据压缩、加密通信、文件格式设计等领域都是基本功。
In real-world applications, letters that appear frequently (like 'E' and 'A') are given shorter binary codes (e.g., 01 ), while rare letters like 'Z' get longer codes (e.g., 111010 ). This reduces the overall size of the encoded file. However, you will need to add a "delimiter" character (like a v or a space) in between your bit packages so your decoder loop knows exactly when to split the string!
For more specific guidance on writing the code, check community discussions on sites like