Merge pull request #2660 from markwang1992/134-canCompleteCircuit

134.加油站增加Go贪心算法（方法一）

problems/0134.加油站.md

@@ -345,6 +345,37 @@ class Solution:
 ```
 
 ### Go 
+
+贪心算法（方法一）
+```go
+func canCompleteCircuit(gas []int, cost []int) int {
+    curSum := 0
+    min := math.MaxInt64
+    for i := 0; i < len(gas); i++ {
+        rest := gas[i] - cost[i]
+        curSum += rest
+        if curSum < min {
+            min = curSum
+        }
+    }
+    if curSum < 0 {
+        return -1
+    }
+    if min >= 0 {
+        return 0
+    }
+    for i := len(gas) - 1; i > 0; i-- {
+        rest := gas[i] - cost[i]
+        min += rest
+        if min >= 0 {
+            return i
+        }
+    }
+    return -1
+}
+```
+
+贪心算法（方法二）
 ```go
 func canCompleteCircuit(gas []int, cost []int) int {
 	curSum := 0