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Problem 39

Medium

1 · Worked examples

0 / 3

Type an input and write what you think is the output . Each problem is converted to Web Assembly, so any possible input will show the corresponding output. Only correct predictions count.

solution()
returns

2 · Which problem is it?

Locked until you have predicted 3 outputs correctly.

The accepted solution

1vector<vector<int>> solution(const vector<vector<int>>& spans,
2 vector<int> fresh) {
3
4 vector<vector<int>> ans;
5
6 int i = 0;
7 int n = spans.size();
8
9 while (i < n && spans[i][1] < fresh[0]) {
10 ans.push_back(spans[i]);
11 i++;
12 }
13
14 while (i < n && spans[i][0] <= fresh[1]) {
15 fresh[0] = min(fresh[0], spans[i][0]);
16 fresh[1] = max(fresh[1], spans[i][1]);
17 i++;
18 }
19
20 ans.push_back(fresh);
21
22 while (i < n) {
23 ans.push_back(spans[i]);
24 i++;
25 }
26
27 return ans;
28}

Names have been stripped. The signature is the only clue you get for free. Compiled as C++20 with the standard headers and using namespace std; already in scope.