str1 = input() strList = list(str1) count = 0 chrNum = 0 while count < len(strList): chrNum = ord(strList[count]) if chrNum >= ord('A') and chrNum <= ord('Z'): chrNum = (chrNum - ord('A') + 4) % 26 + ord('A') else: chrNum = (chrNum - ord('a') + 4) % 26 + ord('a') strList[count] = chr(chrNum) count += 1 print(''.join(strList))
// 这道题其实转化成原来的 26 位就可以了
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