What words read the same forward and backward?

A word, phrase or sentence that is the same both backwards and forwards is called a palindrome. The name palindrome comes from the Greek words ‘again’ (palin) and ‘to run’ (drom).

What kind of word is palindrome?

A palindrome is a type of word play in which a word or phrase spelled forward is the same word or phrase spelled backward. The word palindrome (pronounced ˈpa-lən-ˌdrōm) was invented in the early 1600s by the poet and playwright Ben Jonson, using Greek roots palin and dromos meaning “again” and “direction.”

How do you know if a rearranged number can be a palindrome?

Efficient Approach Now, we count the number of digits that are occurring odd number of times. If the count is 0 or 1 then we can form a palindrome by rearranging the digits of given number. Otherwise, we cannot make palindrome of given number.

Is permutation a palindrome?

A palindrome is a word or phrase that is the same forwards and backwards. A permutation is a rearrangement of letters. The palindrome does not need to be limited to just dictionary words.

How do we check if we can obtain a palindrome by rearranging the characters of the string?

Check if characters of a given string can be rearranged to form a palindrome

1. Create a count array of alphabet size which is typically 256.
2. Traverse the given string and increment count of every character.
3. Traverse the count array and if the count array has more than one odd values, return false.

How do you check if a string is a palindrome or not?

Algorithm to check whether a string is a palindrome or not

1. Input the string.
2. Find the reverse of the string.
3. If the reverse of the string is equal to the input string, then return true. Else, return false.

Which function is used to reverse the string?

strrev() function

How do you reverse a string without reversing words?

Given a line of text, reverse the text without reversing the individual words. A simple solution is to push the individual words from the beginning of the text into a stack. Then, pop all the words from the stack and store them back into the text in LIFO order.

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; }

Is strlen a library function?

The function strlen (think, “string length”) is a C standard library function that returns the length of a string.

How do you reverse a string in a for loop?

Reverse a String Using for Loop

1. static void Main(string[] args)
2. {
3. string _Inputstr = string.Empty, _Reversestr = string.Empty;
4. Console.Write(“Enter the string : “);
5. _Inputstr = Console.ReadLine();
6. for (inti = _Inputstr.Length – 1; i >= 0; i–)
7. {
8. _Reversestr += _Inputstr[i];

How do I turn a list into a string?

To convert a list to a string, use Python List Comprehension and the join() function. The list comprehension will traverse the elements one by one, and the join() method will concatenate the list’s elements into a new string and return it as output.