Given string s, return true if it is possible to make s a palindrome by removing at-most one character from s. A string is a palindrome if

Given a string s, return true if it is a palindrome, otherwise return false. A given sentence is a palindrome if, after converting all

Given an integer array nums, every element in nums appears exactly twice except for two numbers that appear only once. Find these two number

Given a non-empty array of unsorted integers nums, every element in nums appears twice except for one. Find that single number.

Given a input string text, use the characters of text to form as many instances of the word "balloon" as possible. You are only allowed to

Given an integer array nums, where nums[i] is in the range nums[1,n], return all the missing numbers in the range [1,n] that do not