Vector conversion from c++ to java

Question

I have the following code in c++, trying to convert it to java code

The code snippets below shows what I've tried, but its not working

C++ vector<vector<string>> ans; ans.push_back(vector<string>()); for(int k = i, sum = 0; k < n && sum < l[j] ; ++k) { sum += (int) w[k].size(); ans.back().push_back(w[k]);

Java static Vector<Vector<String>> ans = new Vector<Vector<String>>(); ans.add(new Vector()); for(int k = i, sum = 0; k < n && sum < l[j] ; ++k) { sum += (int) w[k].length(); ans.add(w[k]);

ans.lastElement().add(w[k]); fixes it

What exactly isn't working? It doesn't compile? It throws an exception? The result isn't expected? — Andreas
– Andreas, Commented Oct 31, 2019 at 5:53
managed to fix it. the last line should be ans.get(j).add(w[k]); — Coder
– Coder, Commented Oct 31, 2019 at 6:03
@SharhadBashar Then supply an answer to your own question - or remove the question. — Ted Lyngmo
– Ted Lyngmo, Commented Oct 31, 2019 at 6:04

DarkAtom · Accepted Answer · 2019-10-31 06:03:42Z

You need to be more specific about what is not working. At the first glance, instead of ans.add(w[k]);, try ans.lastElement().add(w[k]);. Notice how in your c++ code you have ans.back().push_back(w[k]);, not ans.push_back(w[k]);

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