[leetcode] Compare Version Numbers
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Compare Version Numbers
class Solution {public: int compareVersion(string version1, string version2) { int lev1=0,lev2=0; int id1=0,id2=0; while(id1!=version1.length()||id2!=version2.length()){ lev1=0; while(id1<version1.length()){ if(version1[id1]=='.'){ ++id1; break; } lev1=lev1*10+(version1[id1]-'0'); ++id1; } lev2=0; while(id2<version2.length()){ if(version2[id2]=='.'){ ++id2; break; } lev2=lev2*10+(version2[id2]-'0'); ++id2; } if(lev1>lev2){ return 1; }else if(lev1<lev2){ return -1; } } return 0;//equal }};
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