day3_作业

s = '132a4b5c'
s1 = s[0]+s[2]+s[1]
print(s1)#输出123

 

#使用while和for循环分别打印字符串s=’asdfer’中每个元素。
s = 'asdfer'
num = 0
while num < len(s):
    print(s[num])
    num += 1

 

#使用while和for循环分别打印字符串s=’asdfer’中每个元素。
s = 'asdfer'
for num in s:
    print(num)

#【解析答案】使用while和for循环分别打印字符串s=’asdfer’中每个元素。
s = 'asdfer'
for i in s:
     print(i)

#【解析答案】使用while和for循环分别打印字符串s=’asdfer’中每个元素。
s = 'asdfer'
index = 0
while 1:
    print(s[index])
    index += 1
    if index == len(s):
        break