Write a function for palindrome and factorial and explain?

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Write a function for palindrome and factorial and explain?..

Answer / Manish Kumar Gupt

A Palindrome is a word, phrase, number, or other sequence of characters that reads the same backward as forward.nFor example: 'racecar' and '12321'.nnIn Java, you can write a function to check if a string is palindrome like this:n```javanpublic boolean isPalindrome(String s) {n String reversed = new StringBuilder(s).reverse().toString();n return s.equalsIgnoreCase(reversed);n}nFor the factorial function, it calculates the product of all positive integers up to a given number:n```javanpublic int factorial(int n) {n if (n == 0) return 1;n return n * factorial(n - 1);n}nFactorial function has time complexity O(n).

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