STL in C++

is_sorted() : used to check whether the element of the given range is sorted or not in ascending order.

vector<int> v = {1, 2, 3, 4, 5};

if (is_sorted(v.begin(), v.end())) cout << "Sorted";
else cout << "Not Sorted";

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find() : used to check whether a substring exists in a string.

string str = "..#...#..#.";
string x = "...";

if (str.find(x) != -1) cout << "Found";
else cout << "Not Found";

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