以.进行分割,逐一进行转义//. ,之后数字进行比较就ok了
class Solution {
public int compareVersion(String version1, String version2) {
String [] v1 = version1.split("\.");//.用//进行转义
String [] v2 = version2.split("\.");
int v1Len = v1.length,v2Len = v2.length;
int i = 0;
for(i=0;i<Math.min(v1Len,v2Len);i++){
if(Integer.valueOf(v1[i]) > Integer.valueOf(v2[i])) return 1;
if(Integer.valueOf(v1[i]) < Integer.valueOf(v2[i])) return -1;
}
while(i<v1Len){
if(Integer.valueOf(v1[i]) > 0) return 1;
i++;
}
while(i<v2Len){
if(Integer.valueOf(v2[i]) > 0) return -1;
i++;
}
return 0;
}
}