1317 Convert Integer to the Sum of Two No-Zero Integers 将整数转换为两个无零整数的和
Description:
Given an integer n. No-Zero integer is a positive integer which doesn't contain any 0 in its decimal representation.
Return a list of two integers [A, B] where:
A and B are No-Zero integers.
A + B = n
It's guarateed that there is at least one valid solution. If there are many valid solutions you can return any of them.
Example:
Example 1:
Input: n = 2
Output: [1,1]
Explanation: A = 1, B = 1. A + B = n and both A and B don't contain any 0 in their decimal representation.
Example 2:
Input: n = 11
Output: [2,9]
Example 3:
Input: n = 10000
Output: [1,9999]
Example 4:
Input: n = 69
Output: [1,68]
Example 5:
Input: n = 1010
Output: [11,999]
Constraints:
2 <= n <= 10^4
题目描述:
「无零整数」是十进制表示中 不含任何 0 的正整数。
给你一个整数 n,请你返回一个 由两个整数组成的列表 [A, B],满足:
A 和 B 都是无零整数
A + B = n
题目数据保证至少有一个有效的解决方案。
如果存在多个有效解决方案,你可以返回其中任意一个。
示例 :
示例 1:
输入:n = 2
输出:[1,1]
解释:A = 1, B = 1. A + B = n 并且 A 和 B 的十进制表示形式都不包含任何 0 。
示例 2:
输入:n = 11
输出:[2,9]
示例 3:
输入:n = 10000
输出:[1,9999]
示例 4:
输入:n = 69
输出:[1,68]
示例 5:
输入:n = 1010
输出:[11,999]
提示:
2 <= n <= 10^4
思路:
双指针遍历, 查找到第一个不包含 0的整数就返回
时间复杂度O(nlgn), 空间复杂度O(1)
代码:
C++:
class Solution
{
public:
vector getNoZeroIntegers(int n)
{
int i = 1, j = n - 1;
while (true)
{
if (valid(i) && valid(j)) return {i, j};
++i;
--j;
}
}
private:
bool valid(int i)
{
while (i)
{
if (!(i % 10)) return false;
i /= 10;
}
return true;
}
};
Java:
class Solution {
public int[] getNoZeroIntegers(int n) {
int i = 1, j = n - 1;
while (true) {
if (valid(i) && valid(j)) return new int[]{i, j};
i++;
j--;
}
}
private boolean valid(int i) {
while (i != 0) {
if (i % 10 == 0) return false;
i /= 10;
}
return true;
}
}
Python:
class Solution:
def getNoZeroIntegers(self, n: int) -> List[int]:
return next([i, n - i] for i in range(n) if '0' not in str(i) + str(n - i))