Question

string= ' 1 2 3 4'
for ch in string[: : -1]:
print(ch , end = " , " )
a) 4,1,2,,3
b)4,3,2,,1
c)4,3,2,1
d)4,1,2,3

1

Answer 1

Answer:

hello,

Explanation:

• string= ' 1 2 3 4' # here u have assigned value to the string

• for ch in string[: : -1]: # this statement is using for loop to read each character in the given string using indexing method

•    print(ch , end = " , " )#this statement is used to print each letter in the format as mentioned in the loop  

"   if the statement would have been print(ch) then the output would have been in different lines but since it is print(ch,end=",") output will be in the same line with comma in between each of them     "

now giving appropriate index:

character    -forward index        -reverse index

    1                 -          0                 -         (-4)

    2                -          1                  -         (-3)

    3                -          2                  -          (-2)

    4                -          3                  -          (-1)

hence the output is:

4 , 3 ,  2 ,  1 ,  

hope it helps you

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