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LCSprint.cpp
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LCSprint.cpp
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#include<bits/stdc++.h>
using namespace std;
string LCSprint(string x,string y,int m,int n)
{
int t[m+1][n+1];
for(int i=0;i<m+1;i++)
for(int j=0;j<n+1;j++)
{
if(i==0||j==0)
t[i][j]=0;
}
for(int i=1;i<m+1;i++)
for(int j=1;j<n+1;j++)
{
if(x[i-1]==y[j-1])
t[i][j]=1+t[i-1][j-1];
else
t[i][j]=max(t[i-1][j],t[i][j-1]);
}
int i=m,j=n;
string s ="";
while(i>0 && j>0)
{
if(x[i-1]==y[j-1])
{
s+=x[i-1];
i--;
j--;
}
else
{
if(t[i-1][j]>t[i][j-1])
j--;
else
i--;
}
}
reverse(s.begin(),s.end());
return s;
}
int main()
{
string x="abcdefg";
string y="abefhk";
int m=x.length();
int n=y.length();
string ans=LCSprint(x,y,m,n);
cout<<ans;
return 0;
}