assignment1-澳大利亚Python一对一教学「2」
5.5 process guess(guess: str, answer: str) -> str
Returns a modified representation of guess, in which each letter is replaced by:
A green square if that letter occurs in the same position in answer.
如果该字母在答案中出现在同一位置，则为绿色方块。✅ A yellow square if that letter occurs in a different position in answer.
如果该字母在答案中出现在不同的位置，则为黄色方块。✅ A black square if that letter does not occur in answer.
如果该字母没有出现在答案中，则为黑色方块。✅
While answers must contain 6 unique letters, guesses may contain duplicate letters.
虽然 answer 必须包含 6 个独特的字母，但 guess 可能包含重复的字母。「answer 单词不重复」
If duplicate letters exist in the guess, only one can have a non-black square.
如果 guess 中存在重复的字母，只有一个字母可以有非黑色的方块（黄色或者绿色）。
If the letter does exist in answer, the non-black square is allocated as follows:
如果该字母在 answer 中存在，那么非黑色方块的分配方式如下。
If one of the occurrences is in the correct position, it receives a green square and all other occurrences receive a black square.
如果其中一个出现在正确的位置上，它就会得到一个绿色的方块，其他的出现都会得到一个黑色的方块。✅
Otherwise, if no occurrences are in the correct position, the first occurrence of the letter in guess receives a yellow square and all other occurrences receive a black square.
否则，如果没有出现在正确的位置上，guess 中的字母的第一次出现会得到一个黄色的方块，所有其他的出现会得到一个黑色的方块。
the second 'r' gets non-black square because it is in the right position
第二个 'r' 得到非黑色方块，因为它在正确的位置上。「第二个 ‘r' 得到绿色方块，因为在正确的位置 」
process_guess('arrows', 'strand')
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the first 'r' gets the non-black square because no r's are in the right postition but r exist in the answer.
第一个’r‘ 得到黄色方块，因为没有’r' 在正确的位置，但r存在于answer中
process_guess('arrows', 'answer')
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