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Error
502 - undefined

Reverse the String

Easy
0/40
Average time to solve is 15m
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Contributed by
103 upvotes
Asked in companies
FacebookAckoTata Consultancy Services (TCS)

Problem statement

You are given a string 'STR'. The string contains [a-z] [A-Z] [0-9] [special characters]. You have to find the reverse of the string.

For example:

 If the given string is: STR = "abcde". You have to print the string "edcba".
follow up:
Try to solve the problem in O(1) space complexity. 
Detailed explanation ( Input/output format, Notes, Images )
Constraints:
1 ≤ T ≤ 10
1 ≤ |STR| ≤ 10 ^ 5 

Where |STR| is the length of the string STR.

Time limit: 1 sec.
Sample Input 1:
3
abcde
coding
hello1
Sample Output 1:
edcba
gnidoc
1olleh
Explanation of the Sample Input 1:
For the first test case, STR = "abcde". We need to reverse the string, that is the first element becomes the last element and the last element becomes the first element, the second element becomes the second last element and the second last element becomes the second element and so on. So we get, "edcba".
Sample Input 2:
3
a
1det@Z
$1xYuP
Sample Output 2
a
Z@ted1
PuYx1$
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