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cpp: add “2125. Number of Laser Beams in a Bank”

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Signed-off-by: Matej Focko <me@mfocko.xyz>
This commit is contained in:
Matej Focko 2024-01-03 12:05:21 +01:00
parent f8f23de17e
commit 2daade49c0
Signed by: mfocko
GPG key ID: 7C47D46246790496
1 changed files with 21 additions and 0 deletions
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cpp/number-of-laser-beams-in-a-bank.cpp Normal file
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#include <algorithm>
#include <string>
#include <vector>
class Solution {
public:
int numberOfBeams(const std::vector<std::string>& bank) {
int beams = 0;
int last_row = 0;
for (const auto& row : bank) {
if (auto current_row = std::count(row.begin(), row.end(), '1'); current_row != 0) {
beams += last_row * current_row;
last_row = current_row;
}
}
return beams;
}
};