jhphon0730

DescriptionRoman numerals are represented by seven different symbols: , , , , , and .IVXLCDMSymbol ValueI 1V 5X 10L 50C 100D 500M 1000For example, is written as in Roman numeral, just two ones added together. is written as , which is simply . The number is written as , which is .2II12XIIX + II27XXVIIXX + ..

DescriptionGiven an integer , return if is a xtruexpalindrome, and otherwise.false Example 1:Input: x = 121Output: trueExplanation: 121 reads as 121 from left to right and from right to left.Example 2:Input: x = -121Output: falseExplanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.Example 3:Input: x = 10Output: falseExplanation: Re..

DescriptionYou are given an integer array nums and an integer k.In one operation, you can choose any index i where 0 Codefunc smallestRangeI(nums []int, k int) int { min, max := nums[0], nums[0] for _, num := range nums { if num max { max = num } } if min+k >= max-k { return 0 } return (max - k) - (min + k)} smallestRangeI 함수는 배열 nums의 모든 요소에 대해 최소한의 조정을 통해 배열의 최대값과 최소값의 차이를 k 이하로 만들 때, 조..

DescriptionThere are n people standing in a line labeled from 1 to n. The first person in the line is holding a pillow initially. Every second, the person holding the pillow passes it to the next person standing in the line. Once the pillow reaches the end of the line, the direction changes, and people continue passing the pillow in the opposite direction.For example, once the pillow reaches the..

DescriptionYou are given an integer array score of size n, where score[i] is the score of the ith athlete in a competition. All the scores are guaranteed to be unique.The athletes are placed based on their scores, where the 1st place athlete has the highest score, the 2nd place athlete has the 2nd highest score, and so on. The placement of each athlete determines their rank:The 1st place athlete..

DescriptionGiven two strings ransomNote and magazine, return true if ransomNote can be constructed by using the letters from magazine and false otherwise.Each letter in magazine can only be used once in ransomNote. Example 1:Input: ransomNote = "a", magazine = "b"Output: falseExample 2:Input: ransomNote = "aa", magazine = "ab"Output: falseExample 3:Input: ransomNote = "aa", magazine = "aab"Outpu..

DescriptionGiven the of a singly linked list, return the middle node of the linked list.headIf there are two middle nodes, return the second middle node. Example 1:Input: head = [1,2,3,4,5]Output: [3,4,5]Explanation: The middle node of the list is node 3.Example 2:Input: head = [1,2,3,4,5,6]Output: [4,5,6]Explanation: Since the list has two middle nodes with values 3 and 4, we return the second ..

DescriptionGiven an integer , return the number of steps to reduce it to zero.numIn one step, if the current number is even, you have to divide it by , otherwise, you have to subtract from it.21 Example 1:Input: num = 14Output: 6Explanation: Step 1) 14 is even; divide by 2 and obtain 7. Step 2) 7 is odd; subtract 1 and obtain 6.Step 3) 6 is even; divide by 2 and obtain 3. Step 4) 3 is odd; subtr..

DescriptionGiven an integer n, return a string array answer (1-indexed) where: answer[i] == "FizzBuzz" if i is divisible by 3 and 5. answer[i] == "Fizz" if i is divisible by 3. answer[i] == "Buzz" if i is divisible by 5. answer[i] == i (as a string) if none of the above conditions are true. Example 1:Input: n = 3Output: ["1","2","Fizz"]Example 2:Input: n = 5Output: ["1","2","Fizz","4..

DescriptionYou are given an m x n integer grid accounts where accounts[i][j] is the amount of money the i​​​​​​​​​​​th​​​​ customer has in the j​​​​​​​​​​​th​​​​ bank. Return the wealth that the richest customer has.A customer's wealth is the amount of money they have in all their bank accounts. The richest customer is the customer that has the maximum wealth. Example 1:Input: accounts = [[1,2,3..