728. Self Dividing Numbers #
题目 #
A self-dividing number is a number that is divisible by every digit it contains.
- For example, 128 is a self-dividing number because 128 % 1 == 0, 128 % 2 == 0, and 128 % 8 == 0.
A self-dividing number is not allowed to contain the digit zero.
Given two integers left and right, return a list of all the self-dividing numbers in the range [left, right].
Example 1:
Input: left = 1, right = 22
Output: [1,2,3,4,5,6,7,8,9,11,12,15,22]
Example 2:
Input: left = 47, right = 85
Output: [48,55,66,77]
Constraints:
- 1 <= left <= right <= 10000
题目大意 #
自除数是指可以被它包含的每一位数整除的数。
- 例如,128 是一个 自除数 ,因为 128 % 1 == 0,128 % 2 == 0,128 % 8 == 0。
自除数 不允许包含 0 。
给定两个整数 left 和 right ,返回一个列表,列表的元素是范围 [left, right] 内所有的 自除数 。
解题思路 #
- 模拟计算
代码 #
package leetcode
func selfDividingNumbers(left int, right int) []int {
var ans []int
for num := left; num <= right; num++ {
if selfDividingNum(num) {
ans = append(ans, num)
}
}
return ans
}
func selfDividingNum(num int) bool {
for d := num; d > 0; d = d / 10 {
reminder := d % 10
if reminder == 0 {
return false
}
if num%reminder != 0 {
return false
}
}
return true
}