0010 0100 01 110 1111011 11 11111 010 000 0 001101 1010 111 100 0 001101 01111 000 001101 00 10 1 0 010 0 000 1 01111 10 11110 101011 1111101

題解：

長度不一的01字符串 考慮是不是摩斯密碼?

C#版本

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks;namespace ConsoleApp1 {class Program{static void Main(string[] args){string oldstr;oldstr = Console.ReadLine();string []str = oldstr.Split(' ');for (int i = 0; i < str.Length; i++){switch (str[i]){case "01":Console.Write("A"); break;case "1000":Console.Write("B"); break;case "1010":Console.Write("C"); break;case "100":Console.Write("D"); break;case "0":Console.Write("E"); break;case "0010":Console.Write("F"); break;case "110":Console.Write("G"); break;case "0000":Console.Write("H"); break;case "00":Console.Write("I"); break;case "0111":Console.Write("J"); break;case "101":Console.Write("K"); break;case "0100":Console.Write("L"); break;case "11":Console.Write("M"); break;case "10":Console.Write("N"); break;case "111":Console.Write("O"); break;case "0110":Console.Write("P"); break;case "1101":Console.Write("Q"); break;case "010":Console.Write("R"); break;case "000":Console.Write("S"); break;case "1":Console.Write("T"); break;case "001":Console.Write("U"); break;case "0001":Console.Write("V"); break;case "011":Console.Write("W"); break;case "1001":Console.Write("X"); break;case "1011":Console.Write("Y"); break;case "1100":Console.Write("Z"); break;case "01111":Console.Write("1"); break;case "00111":Console.Write("2"); break;case "00011":Console.Write("3"); break;case "00001":Console.Write("4"); break;case "00000":Console.Write("5"); break;case "10000":Console.Write("6"); break;case "11000":Console.Write("7"); break;case "11100":Console.Write("8"); break;case "11110":Console.Write("9"); break;case "11111":Console.Write("0"); break;case "001100":Console.Write("?"); break;case "10010":Console.Write("/"); break;case "100001":Console.Write("-"); break;case "010101":Console.Write("."); break;case "110011":Console.Write(","); break;case "011010":Console.Write("@"); break;case "111000":Console.Write(":"); break;case "101010":Console.Write(";"); break;case "10001":Console.Write("="); break;case "011110":Console.Write("'"); break;case "101011":Console.Write("!"); break;case "001101":Console.Write("_"); break;case "010010":Console.Write("\""); break;case "10110":Console.Write("("); break;case "101101":Console.Write(")"); break;case "0001001":Console.Write("$"); break;case "01000":Console.Write("&"); break;}}}} }

運行結果：

得到：

FLAGM0RSE_CODE_1S_INTEREST1N9!

但是問題來了，提交flag為??FLAG{M0RSE_CODE_1S_INTEREST1N9!}? 時不正確，可能是因為要求答案為小寫吧，于是修改flag為小寫，注意其中有字符“1”、“0”、“9”，不要與字母弄混了喲

flag：

flag{m0rse_code_1s_interest1n9!}

?

Python版本

from __future__ import print_function a = input("input the string:") s = a.split(" ") dict = {'01': 'A','1000': 'B','1010': 'C','100':'D','0':'E','0010':'F','110': 'G','0000': 'H','00': 'I','0111':'J','101': 'K','0100': 'L','11': 'M','10': 'N','111': 'O','0110': 'P','1101': 'Q','010': 'R','000': 'S','1': 'T','001': 'U','0001': 'V','011': 'W','1001': 'X','1011': 'Y','1100': 'Z','01111': '1','00111': '2','00011': '3','00001': '4','00000': '5','10000': '6','11000': '7','11100': '8','11110': '9','11111': '0','001100': '?','10010': '/','101101': '()','100001': '-','010101': '.','110011':',','011010':'@','111000':':','101010':':','10001':'=','011110':"'",'101011':'!','001101':'_','010010':'"','10110':'(','1111011':'{','1111101':'}'}; for item in s:print (dict[item],end='')

得到：

FLAG{M0RSE_CODE_1S_INTEREST1N9!}

提交錯誤 全改成小寫就對了：

flag{m0rse_code_1s_interest1n9!}

?

記事本替換版本

..-. .-.. .- --. ----.-- -- ----- .-. ... . ..--.- -.-. --- -.. . ..--.- .---- ... ..--.- .. -. - . .-. . ... - .---- -. ----. -.-.-- -----.-

flag----.--m0rse code 1s interest1n9!-----.-?

?空格改下劃線_,兩端無法解密摩斯電碼改為大括號

flag{m0rse_code_1s_interest1n9!}

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