leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
Log | Files | Refs | README | LICENSE |
commit344e59315e888689ab8ecde5a22f0b24fb936c3d
parent9516fefe56c16201672ae03ddc5a6eada9d3859b
authorDimitrije Dobrota <mail@dimitrijedobrota.com>
dateWed, 31 May 2023 13:33:34 +0200

Daily Problem

Diffstat:
AProblems/1396.cpp|+++++++++++++++++++++++
MREADME.md|+

2 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/Problems/1396.cpp b/Problems/1396.cpp

@@ -0,0 +1,23 @@

class UndergroundSystem {
unordered_map<int, pair<string, int>> check_in;
unordered_map<string, pair<int, int>> average;
public:
UndergroundSystem() {}
void checkIn(int id, const string &stationName, int t) {
check_in[id] = {stationName, t};
}
void checkOut(int id, const string &stationName, int t) {
auto &[name, time] = check_in[id];
auto &p = average[name + "-" + stationName];
p.second += t - time;
p.first++;
}
double getAverageTime(const string &startStation, const string &endStation) {
auto &p = average[startStation + "-" + endStation];
return (double)p.second / p.first;
}
};

diff --git a/README.md b/README.md

@@ -566,3 +566,4 @@ for solving problems.

| 2666 | Easy | [Allow One Function Call](Problems/2666.js) |
| 2667 | Easy | [Create Hello World Function](Problems/2667.js) |
| 2676 | Medium | [Throttle](Problems/2676.js) |
| 1396 | Medium | [Design Underground System](Problems/1396.cpp) |