原文链接: https://leetcode-cn.com/problems/distance-between-bus-stops
英文原文
A bus has n
stops numbered from 0
to n - 1
that form a circle. We know the distance between all pairs of neighboring stops where distance[i]
is the distance between the stops number i
and (i + 1) % n
.
The bus goes along both directions i.e. clockwise and counterclockwise.
Return the shortest distance between the given start
and destination
stops.
Example 1:
Input: distance = [1,2,3,4], start = 0, destination = 1 Output: 1 Explanation: Distance between 0 and 1 is 1 or 9, minimum is 1.
Example 2:
Input: distance = [1,2,3,4], start = 0, destination = 2 Output: 3 Explanation: Distance between 0 and 2 is 3 or 7, minimum is 3.
Example 3:
Input: distance = [1,2,3,4], start = 0, destination = 3 Output: 4 Explanation: Distance between 0 and 3 is 6 or 4, minimum is 4.
Constraints:
1 <= n <= 10^4
distance.length == n
0 <= start, destination < n
0 <= distance[i] <= 10^4
中文题目
环形公交路线上有 n
个站,按次序从 0
到 n - 1
进行编号。我们已知每一对相邻公交站之间的距离,distance[i]
表示编号为 i
的车站和编号为 (i + 1) % n
的车站之间的距离。
环线上的公交车都可以按顺时针和逆时针的方向行驶。
返回乘客从出发点 start
到目的地 destination
之间的最短距离。
示例 1:
输入:distance = [1,2,3,4], start = 0, destination = 1 输出:1 解释:公交站 0 和 1 之间的距离是 1 或 9,最小值是 1。
示例 2:
输入:distance = [1,2,3,4], start = 0, destination = 2 输出:3 解释:公交站 0 和 2 之间的距离是 3 或 7,最小值是 3。
示例 3:
输入:distance = [1,2,3,4], start = 0, destination = 3 输出:4 解释:公交站 0 和 3 之间的距离是 6 或 4,最小值是 4。
提示:
1 <= n <= 10^4
distance.length == n
0 <= start, destination < n
0 <= distance[i] <= 10^4
通过代码
高赞题解
出这么简单的题真的好么……
class Solution {
public:
int distanceBetweenBusStops(vector<int>& distance, int start, int destination) {
if(start==destination)return 0;
if(start>destination)swap(start,destination);
int n=distance.size();
int sum1=0;
int sum2=0;
for(int i=0;i<start;++i)
{
sum2+=distance[i];
}
for(int i=start;i<destination;++i)
{
sum1+=distance[i];
}
for(int i=destination;i<n;++i)
{
sum2+=distance[i];
}
return min(sum1,sum2);
}
};
统计信息
通过次数 | 提交次数 | AC比率 |
---|---|---|
13866 | 23717 | 58.5% |
提交历史
提交时间 | 提交结果 | 执行时间 | 内存消耗 | 语言 |
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