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0386_Lexicographical_Numbers.cpp
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33 lines (33 loc) · 1.84 KB
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// ███████╗ █████╗ ███╗ ██╗ ██████╗ █████╗ ██████╗ ██████╗ ██╗ ██╗
// ██╔════╝ ██╔══██╗ ████╗ ██║ ██╔══██╗ ██╔══██╗ ██╔══██╗ ██╔══██╗ ██║ ██║
// ███████╗ ███████║ ██╔██╗ ██║ ██║ ██║ ███████║ ██████╔╝ ██████╔╝ ███████║
// ╚════██║ ██╔══██║ ██║╚██╗██║ ██║ ██║ ██╔══██║ ██╔═██╗ ██╔══██╗ ██╔══██║
// ███████║ ██║ ██║ ██║ ╚████║ ██████╔╝ ██║ ██║ ██║ ██╗ ██████╔╝ ██║ ██║
// ╚══════╝ ╚═╝ ╚═╝ ╚═╝ ╚═══╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ ╚═╝ ╚═╝
#pragma GCC optimize("Ofast", "inline", "ffast-math", "unroll-loops","no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native", "f16c")
auto init = []() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
return 'c';
}();
class Solution {
public:
vector<int> lexicalOrder(int n) {
vector<int> res;
function<void(int)> dfs = [&](int s){
if(s>n){
return;
}
res.push_back(s);
for(int i=0; i<=9; i++){
dfs((s*10+i));
}
};
for(int i=1; i<=9; i++){
dfs(i);
}
return res;
}
};