输出字符奇数位置的字符串

几种方式如下

a ='asdkfjadfakjdfhaw'

print(a[::2])
print("分隔符".center(50,"-"))

for i in range(len(a)):
   if i%2==0:
      print(a[i],end="")
print('')
print("分隔符".center(50, "-"))

b = list()
for i in range(len(a)):
   if i % 2 == 0:
      b.append(a[i])
print(''.join(b))
print("分隔符".center(50, "-"))

答案

adfafkdhw
-----------------------分隔符------------------------
adfafkdhw
-----------------------分隔符------------------------
adfafkdhw
-----------------------分隔符------------------------