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Create LCS.cpp

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KiritoTRw 2016-08-11 09:05:04 +08:00 committed by GitHub
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commit 1d52444969
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.ACM-Templates/LCS.cpp Normal file
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/// LCS 最长子序列
namespace LCS
{
const int MAXLEN_A = 500;
const int MAXLEN_B = 500;
int dp[MAXLEN_A+5][MAXLEN_B+5];
int deal(const char* a,const char* b)
{
int lena=strlen(a);
int lenb=strlen(b);
for(int i=0;i<lenb;i++)
{
for(int j=0;j<lena;j++)
{
if(i==0) dp[i][j]=0;
else if(b[i]==a[j])
{
if(j!=0) dp[i][j]=dp[i-1][j-1]+1;
else dp[i][j]=1;
}
else
{
if(j!=0) dp[i][j]=max(dp[i-1][j],dp[i][j-1]);
else dp[i][j]=dp[i-1][j];
}
}
}
return dp[lenb-1][lena-1];
}
}//End of namespace LCS