How to Reverse String in Python

1. How do you reverse a string in Python?
2. How do you reverse a string?
3. What does reverse () do in Python?
4. How do you reverse a string in Python 3?
5. How do I reverse a string without Strrev?
6. Which function is used to reverse the string?
7. How do you reverse a string without reverse function?
8. How does reverse function work?
9. How do you reverse a number?
10. What is slicing in Python?
11. How do you reverse a string without reverse method in Python?
12. How do you reverse a string in a while loop?
13. How do you reverse a list?

How do you reverse a string in Python?

We have a string, "Hello World", which we want to reverse:

1. The String to Reverse. txt = "Hello World" [::-1] print(txt) ...
2. Slice the String. txt = "Hello World" [::-1] ...
3. Slice the String. def my_function(x): ...
4. Return the String. def my_function(x): ...
5. Call the Function. def my_function(x): ...
6. Print the Result. def my_function(x):

How do you reverse a string?

Method 1: Reverse a string by swapping the characters

1. Input the string from the user.
2. Find the length of the string. The actual length of the string is one less than the number of characters in the string. ...
3. Repeat the below steps from i = 0 to the entire length of the string.
4. rev[i] = str[j]
5. Print the reversed string.

What does reverse () do in Python?

reverse() is an inbuilt method in Python programming language that reverses objects of list in place. Returns: The reverse() method does not return any value but reverse the given object from the list.

How do you reverse a string in Python 3?

Example -

1. #reverse a string using reversed()
2. # Function to reverse a string.
3. def reverse(str):
4. string = "".join(reversed(str)) # reversed() function inside the join() function.
5. return string.
6. s = "JavaTpoint"
7. print ("The original string is : ",s)
8. print ("The reversed string using reversed() is : ",reverse(s) )

How do I reverse a string without Strrev?

String reversal without strrev function

1. int main() char s[1000], r[1000]; int begin, end, count = 0;
2. printf("Input a string\n"); gets(s);
3. while (s[count] != '\0') count++;
4. end = count - 1;
5. for (begin = 0; begin < count; begin++) r[begin] = s[end]; end--;
6. r[begin] = '\0';
7. printf("%s\n", r);
8. return 0;

Which function is used to reverse the string?

The strrev() function is used to reverse the given string. Syntax: char *strrev(char *str);

How do you reverse a string without reverse function?

Example to reverse string in Java by using static method

1. import java.util.Scanner;
2. public class ReverseStringExample3.
3. public static void main(String[] arg)
4. ReverseStringExample3 rev=new ReverseStringExample3();
5. Scanner sc=new Scanner(System.in);
6. System.out.print("Enter a string : ");

How does reverse function work?

The reversed() function allows us to process the items in a sequence in reverse order. It accepts a sequence and returns an iterator. A sequence list string, list, tuple etc. To produce the result at once we have wrapped reversed() in a list() call.

How do you reverse a number?

How to reverse a number mathematically.

1. Step 1 — Isolate the last digit in number. lastDigit = number % 10. The modulo operator (%) returns the remainder of a divison. ...
2. Step 2 — Append lastDigit to reverse. reverse = (reverse * 10) + lastDigit. ...
3. Step 3-Remove last digit from number. number = number / 10. ...
4. Iterate this process. while (number > 0)

What is slicing in Python?

Slicing in python means taking elements from one given index to another given index. We pass slice instead of index like this: [start:end] . We can also define the step, like this: [start:end:step] . If we don't pass start its considered 0. If we don't pass end its considered length of array in that dimension.

How do you reverse a string without reverse method in Python?

First of all, let's take a string and store it in a variable my_string.

1. my_string=("Nitesh Jhawar") my_string=("Nitesh Jhawar") my_string=("Nitesh Jhawar") ...
2. str="" str="" str="" ...
3. for i in my_string: for i in my_string: for i in my_string: ...
4. str=i+str. str=i+str. str=i+str.

How do you reverse a string in a while loop?

1) Here i=length of the given string. While loop iterates until the condition i>0 is false, i.e. if the length of the string is zero then cursor terminates the loop. 2) While loop prints the character of the string which is at the index (i-1) until i>0. Then we will get the reverse of a string.

How do you reverse a list?

What's the best way to reverse the order of a list in Python?

1. Reversing a list in-place with the list. reverse() method.
2. Using the “ [::-1] ” list slicing trick to create a reversed copy.
3. Creating a reverse iterator with the reversed() built-in function.