python31 [Baekjoon/Python] No.4673 Self Numbers No.4673 Self Numbers Problmes In 1949 the Indian mathematician D.R. Kaprekar discovered a class of numbers called self-numbers. For any positive integer n, define d(n) to be n plus the sum of the digits of n. (The d stands for digitadition, a term coined by Kaprekar.) For example, d(75) = 75 + 7 + 5 = 87. Given any positive integer n as a starting point, you can construct the infinite increasing.. 2020. 4. 23. 이전 1 다음
