添加 problem 1184

Algorithms/1184. Distance Between Bus Stops/1184. Distance Between Bus Stops.go

@@ -0,0 +1,15 @@
+package leetcode
+
+func distanceBetweenBusStops(distance []int, start int, destination int) int {
+	clockwiseDis, counterclockwiseDis, n := 0, 0, len(distance)
+	for i := start; i != destination; i = (i + 1) % n {
+		clockwiseDis += distance[i]
+	}
+	for i := destination; i != start; i = (i + 1) % n {
+		counterclockwiseDis += distance[i]
+	}
+	if clockwiseDis < counterclockwiseDis {
+		return clockwiseDis
+	}
+	return counterclockwiseDis
+}

Algorithms/1184. Distance Between Bus Stops/1184. Distance Between Bus Stops_test.go

@@ -0,0 +1,54 @@
+package leetcode
+
+import (
+	"fmt"
+	"testing"
+)
+
+type question1184 struct {
+	para1184
+	ans1184
+}
+
+// para 是参数
+// one 代表第一个参数
+type para1184 struct {
+	distance    []int
+	start       int
+	destination int
+}
+
+// ans 是答案
+// one 代表第一个答案
+type ans1184 struct {
+	one int
+}
+
+func Test_Problem1184(t *testing.T) {
+
+	qs := []question1184{
+
+		question1184{
+			para1184{[]int{1, 2, 3, 4}, 0, 1},
+			ans1184{1},
+		},
+
+		question1184{
+			para1184{[]int{1, 2, 3, 4}, 0, 2},
+			ans1184{3},
+		},
+
+		question1184{
+			para1184{[]int{1, 2, 3, 4}, 0, 3},
+			ans1184{4},
+		},
+	}
+
+	fmt.Printf("------------------------Leetcode Problem 1184------------------------\n")
+
+	for _, q := range qs {
+		_, p := q.ans1184, q.para1184
+		fmt.Printf("【input】:%v       【output】:%v\n", p, distanceBetweenBusStops(p.distance, p.start, p.destination))
+	}
+	fmt.Printf("\n\n\n")
+}

Algorithms/1184. Distance Between Bus Stops/README.md

@@ -0,0 +1,59 @@
+# [1184. Distance Between Bus Stops](https://leetcode.com/problems/distance-between-bus-stops/)
+
+## 题目:
+
+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:**
+
+![](https://assets.leetcode.com/uploads/2019/09/03/untitled-diagram-1.jpg)
+
+    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:**
+
+![](https://assets.leetcode.com/uploads/2019/09/03/untitled-diagram-1-1.jpg)
+
+    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:**
+
+![](https://assets.leetcode.com/uploads/2019/09/03/untitled-diagram-1-2.jpg)
+
+    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`
+
+
+## 题目大意
+
+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。
+
+提示：
+
+- 1 <= n <= 10^4
+- distance.length == n
+- 0 <= start, destination < n
+- 0 <= distance[i] <= 10^4
+
+
+## 解题思路
+
+
+- 给出一个数组，代表的是公交车站每站直接的距离。距离是按照数组下标的顺序给出的，公交车可以按照顺时针行驶，也可以按照逆时针行驶。问行驶的最短距离是多少。
+- 按照题意，分别算出顺时针和逆时针的行驶距离，比较两者距离，取出小值就是结果。