将字符串拆分为特定大小的块 [英] Splitting a string into chunks of a certain size

问题描述

假设我有一个字符串:

string str = "1111222233334444"; 

如何将这个字符串分成一定大小的块?

How can I break this string into chunks of some size?

例如，将其分成 4 个大小将返回字符串:

e.g., breaking this into sizes of 4 would return strings:

"1111"
"2222"
"3333"
"4444"

推荐答案

static IEnumerable<string> Split(string str, int chunkSize)
{
    return Enumerable.Range(0, str.Length / chunkSize)
        .Select(i => str.Substring(i * chunkSize, chunkSize));
}

请注意，可能需要额外的代码来优雅地处理边缘情况(null 或空输入字符串，chunkSize == 0，输入字符串长度不能被 chunkSize 等).最初的问题没有为这些边缘情况指定任何要求，在现实生活中，这些要求可能会有所不同，因此超出了本答案的范围.

Please note that additional code might be required to gracefully handle edge cases (null or empty input string, chunkSize == 0, input string length not divisible by chunkSize, etc.). The original question doesn't specify any requirements for these edge cases and in real life the requirements might vary so they are out of scope of this answer.

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