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| author | Yuqian Yang <crupest@crupest.life> | 2025-02-12 15:55:21 +0800 |
|---|---|---|
| committer | Yuqian Yang <crupest@crupest.life> | 2025-02-12 16:04:50 +0800 |
| commit | 77e6cdc863d2cbd9df578a665804daf28d8593fe (patch) | |
| tree | 62c9f3e071d8d1d6fe125fe801907db11784332e /works/solutions/leetcode/cpp/766.cpp | |
| parent | 10eb95869601e145b1d8bc909424777c25752d51 (diff) | |
| parent | a557fa36a22c5ef4a29da596ee1e3aa10be55984 (diff) | |
| download | crupest-77e6cdc863d2cbd9df578a665804daf28d8593fe.tar.gz crupest-77e6cdc863d2cbd9df578a665804daf28d8593fe.tar.bz2 crupest-77e6cdc863d2cbd9df578a665804daf28d8593fe.zip | |
import(solutions): IMPORT crupest/solutions COMPLETE.
Diffstat (limited to 'works/solutions/leetcode/cpp/766.cpp')
| -rw-r--r-- | works/solutions/leetcode/cpp/766.cpp | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/works/solutions/leetcode/cpp/766.cpp b/works/solutions/leetcode/cpp/766.cpp new file mode 100644 index 0000000..3e8a015 --- /dev/null +++ b/works/solutions/leetcode/cpp/766.cpp @@ -0,0 +1,44 @@ +#include <algorithm>
+#include <vector>
+
+using std::vector;
+
+class Solution {
+public:
+ bool isToeplitzMatrix(vector<vector<int>> &matrix) {
+ int row_count = matrix.size();
+ int col_count = matrix.front().size();
+
+ if (matrix.size() == 1)
+ return true;
+ if (matrix.front().size() == 1)
+ return true;
+
+ // offset = col - row
+ // max(offset) = row_count - 2
+ // min(offset) = -(col_count - 2)
+ for (int offset = -(col_count - 2); offset <= (row_count - 2); offset++) {
+ int row, col;
+ if (offset >= 0) {
+ row = offset;
+ col = 0;
+ } else {
+ row = 0;
+ col = -offset;
+ }
+
+ int value = matrix[row][col];
+ row++;
+ col++;
+
+ while (row < row_count && col < col_count) {
+ if (matrix[row][col] != value) {
+ return false;
+ }
+ row++;
+ col++;
+ }
+ }
+ return true;
+ }
+};
|