There are five common methods of string inversion in Python: using string slicing, using recursion, using the list reverse () method, using stack and using for loop.
s = "hello"
reversed_ s = s[::-1]
print(reversed_s)
>>> olleh
if len(string)==0:
return string
else:
return reverse_ it(string[1:]) + string[0]
print "added " + string[0]
string1 = "the crazy programmer"
string2 = reverse_ it(string1)
print "original = " + string1
print "reversed = " + string2
...: l.reverse()
...: print (l)
['d', 'c', 'b', 'a']
L = list (a_string) # simulate all stacking
new_ string = ""
while len(l)>0:
new_ String + = l.pop() # simulate stack out
return new_ string
def func(s):
r = ""
max_ index = len(s) - 1
for index,value in enumerate(s):
r += s[max_index-index]
return r
r = func(s)
The above are the five common methods of string inversion in Python. I hope it can be helpful to your learning of Python strings
In python, type the following into a document. NOTE: Sentences following a # symbol are comments, and are not necessary for the program to run. #!/usr/bin/python #This program takes a input from a user and reverses it. number = input("Type a number: ") #This takes input from a user. a = len(number) #This finds the length of the number reverse = "" #This sets the variable reverse to an empty string. for i in number: a = a-1 #The places in a string start from 0. The last value will be the length minus 1.reverse = reverse + number[a] #Makes the number's last digit the new string's first. print("The reverse of", number, "is", reverse + ".") #prints the resulting string. This program will take any sequence of characters and reverse them. The final value is a string, but if an integer is needed, one needs only to add the line reverse = int(reverse) above the print statement. However, this will stop the program from being able to reverse strings, as it is not possible to convert a string to an integer if it is not a number.
In Python, you can enter an integer using the input() function, which captures user input as a string. To convert this string to an integer, you can use the int() function. For example: user_input = input("Enter an integer: ") integer_value = int(user_input) This will convert the input string to an integer, assuming the user enters a valid integer.
In Python, you can get input from the user using the built-in input() function. This function prompts the user for input and returns it as a string. For example, you can use user_input = input("Enter something: ") to display a message and capture the user's response. If you need the input in a different data type, you can convert it using functions like int() or float().
//This function reverse any given string, except nullstatic string Reverse(string s) {char[] temp = s.ToCharArray();Array.Reverse(temp);return new string(temp);}//The main usagestring inputString = Console.ReadLine();Console.WriteLine(Reverse(inputString));
1.>>> x=input("enter data: ")2.enter data: 253.>>> type(x)4.5.>>> y = int(x)6.>>> type(y)7.I used Python 3.0 for this.Else for earlier version, to accept string type input, u should be using "raw_input" instead of "input" only.I made python accept a data and tested its type, which return to be a string (line 4).Then I usedint()to convert the string into a number, which, for testing purpose, I assigned the value to a variable y. (line 5)Testing the type of data that variable y stores, confirms that the string type was converted to an integer type.(line 7)
def isPalindrome(s): return s == s[::-1] then just call the function with a string like isPalindrome('poop')
in python 3 basic input and output are achieved withstring = input("prompt>")andprint("something")In python 2 you havestring = raw_input("prompt>")andprint "something"
Here's a Python program that accomplishes this: def convert_case(input_str): return input_str.swapcase() user_input = input("Enter a string: ") converted_str = convert_case(user_input) print("Converted string:", converted_str)
(in C#)string Reverse (string input) {There are two cases; the recursive case and the trivial case.The trivial case is when the string has zero or one character. In this case, the reversal of the string is the same.if (input.Length
{ // get input char input[256]; gets(input); // reverse it char reverse[256]; strReverse(input, reverse); } // reverses str and puts the result in buff // NOTE: buff must be at least as large as str void strReverse(const char* str, char* buff) { const int length = strlen(str); // special case for zero-length strings if( length == 0 ) { return; } // reversify int i; for(i = 0; i < length; ++i) { buff[i] = str[length - i - 1]; } buff[i] = '\0'; }
The following program prints every second character of the input in reverse order. #include<iostream> #include<sstream> int main() { std::cout << "Input:\t"; std::string input = ""; std::getline (std::cin, input); if (input.size()) { std::cout << "Output:\t"; unsigned index = input.size() / 2 * 2; do { index -= 2; std::cout << input[index]; } while (index); std::cout << std::endl; } }
To remove hex characters from a string in Python, you can use the regular expression module re and the sub function. Here is an example code snippet: python import re def removehex(inputstring): return re.sub(r'x00-x7F', '', inputstring) inputstring "Hellox00World" outputstring removehex(inputstring) print(outputstring) This code snippet defines a function removehex that uses a regular expression to remove any non-ASCII characters (hex characters) from the input string.