day4

# import sys # print(sys.maxunicode) ##作业题 # s="132a4b5c" # s1=s[0]+s[2]+s[1] # s="asdefr" # # for i in s: # # print(i) # i=0 # while 1: # print(s[i]) # i+=1 # if i==len(s):break # co

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