0134.加油站.md Javascript

Author: fusunx

problems/0134.加油站.md

@@ -241,7 +241,28 @@ class Solution:
 
 Go：
 
+Javascript:
+```Javascript
+var canCompleteCircuit = function(gas, cost) {
+    const gasLen = gas.length
+    let start = 0
+    let curSum = 0
+    let totalSum = 0
+
+    for(let i = 0; i < gasLen; i++) {
+        curSum += gas[i] - cost[i]
+        totalSum += gas[i] - cost[i]
+        if(curSum < 0) {
+            curSum = 0
+            start = i + 1
+        }
+    }
+
+    if(totalSum < 0) return -1
 
+    return start
+};
+```
 
 
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