꿈꾸는공학도

https://leetcode.com/problems/integer-to-roman/description/Seven different symbols represent Roman numerals with the following values:SymbolValueI1V5X10L50C100D500M1000Roman numerals are formed by appending the conversions of decimal place values from highest to lowest. Converting a decimal place value into a Roman numeral has the following rules:If the value does not start with 4 or 9, select t..

https://leetcode.com/problems/maximum-swap/description/?envType=daily-question&envId=2024-10-17You are given an integer num. You can swap two digits at most once to get the maximum valued number.Return the maximum valued number you can get. Example 1:Input: num = 2736Output: 7236Explanation: Swap the number 2 and the number 7.Example 2:Input: num = 9973Output: 9973Explanation: No swap. Constrain..