Shortest Palindrome in C++ (2024)

FAQs

What is the smallest string that is a palindrome? ›

Explanation 1:Change the last index “c” to “b”, it becomes “aabb”. Then rearrange the string, it becomes “abba”. This is the lexicographically smallest string.

For example, for the given string “deed”, the string is already a palindrome, thus, minimum characters needed are 0. Similarly, for the given string “aabaaca”, the minimum characters needed are 2 i.e. 'a' and 'c' which makes the string “acaabaaca” palindrome.

The 19-letter Finnish word saippuakivikauppias (a soapstone vendor), is the longest single-word palindrome in everyday use, while the 12-letter term tattarrattat (from James Joyce in Ulysses) is the longest in English.

The first 30 palindromic numbers (in decimal) are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 202, ...

Continuing this process, we find that the smallest 5-digit palindrome using three different digits is option d. 10234. Therefore, the correct answer is d. 10234.

You can obtain the length of a C++ string using the string class member functions length() or size() . Both of the methods return the data type size_t (which is an unsigned integer type), the number of valid characters in the string.

In the C programming language, an Armstrong number is a number that is equal to the sum of the cubes of its digits. For example, 153 is an Armstrong number because 1^3+ 5^3 + 3^3 = 153.

We can think of a palindrome as just any sequence of letters that reads the same forward and backward, such as xyzyzyx. We call a sequence of letters a string. So we can say that any string containing just one letter is by default a palindrome.

How many 5 digit palindromes can be written? ›

By using multiplication principle, there are 9×10×10×1×1=900 5-digit palindromic numbers.

The answer is there are 17,576 five-character palindromes, if dups are allowed. How many five-letter words can be made from the 26 letters of the English language if repetition is allowed?

Palindrome Program in C++

A number is a Palindrome number if the reverse of the number and the numbers itself are equal i.e. if the number and its reverse are the same then a number is a palindrome number. Example : Number : 12321 Reverse : 12321 Both number & reverse are equal so palindrome number.

The longest palindrome in English is often considered tattarrattat, coined by James Joyce in his 1922 Ulysses to imitate the sound of a knock on the door. Try your hand at this list of some of the hardest words to spell. That's 12 letters.

A palindrome is a word or phrase that is the same forwards and backwards, but a semordnilap ("palindromes" backwards) is a word that becomes a different word when read backwards. Get it, smug gums? Heard in Unbreakable Kimmy Schmidt.

A string is said to be palindrome if it remains the same on reading from both ends. It means that when you reverse a given string, it should be the same as the original string. For instance, the string 'level' is a palindrome because it remains the same when you read it from the beginning to the end and vice versa.

To create the three-digit palindromes, we must have identical, nonzero digits in the one's and hundred's places, but there is no restriction on the digit in the ten's place. The three digit palindromes are 101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 202, 212, 222, . . .

Since an empty string reads the same forward and backward, it is a palindrome.