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Copy pathleetcode134.java
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33 lines (32 loc) · 1018 Bytes
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package leetcode;
public class leetcode134 {
public static void main(String[] args) {
System.out.println(
new leetcode134().canCompleteCircuit(new int[]{
3,1,1
},new int[]{
1,2,2
})
);
}
public int canCompleteCircuit(int[] gas, int[] cost) {
for (int i = 0; i <gas.length ; i++) {
int allGas=0; //所有的汽油，初始为0
for (int j = i; j <=gas.length ; j++) {
if (j==gas.length){
if (i==0&&allGas>=0) return i;
for (int k = 0; k <i; k++) {
allGas+=gas[k]-cost[k];
if (allGas<0) break;
if (k==i-1&&allGas>=0) return i;
}
}
if (j<gas.length){
allGas+=gas[j]-cost[j];
if (allGas<0) break;
}
}
}
return -1;
}
}