251013

25/10/ds3.cpp

@@ -0,0 +1,71 @@
+#include <iostream>
+#include <vector>
+#include <random>
+#include <iomanip>
+
+using namespace std;
+
+// 方法1: 生成特定的二维vector
+static vector<vector<int>> generateSpecificMatrix()
+{
+    return {
+        {2, 3, 4, 2, 5},
+        {6, 2, 3, 1, 8},
+        {3, 5, 4, 6, 4},
+        {4, 2, 3, 2, 3},
+        {2, 1, 6, 7, 5}};
+}
+
+// 方法2: 生成随机n×n数组
+vector<vector<int>> generateRandomMatrix(int n, int min_val = 1, int max_val = 10)
+{
+    random_device rd;
+    mt19937 gen(rd());
+    uniform_int_distribution<int> dis(min_val, max_val);
+
+    vector<vector<int>> matrix(n, vector<int>(n));
+    for (int i = 0; i < n; i++)
+    {
+        for (int j = 0; j < n; j++)
+        {
+            matrix[i][j] = dis(gen);
+        }
+    }
+    return matrix;
+}
+
+// 打印矩阵的辅助函数
+void printMatrix(const vector<vector<int>> &matrix)
+{
+    for (const auto &row : matrix)
+    {
+        for (int val : row)
+        {
+            cout << setw(3) << val << " ";
+        }
+        cout << endl;
+    }
+    cout << endl;
+}
+
+int getMaxWay(std::vector<vector<int>> matrix)
+{
+    int n = matrix.size();
+    for (int i = 0; i < n; i++)
+    {
+        for (int j = 0; j < n; j++)
+        {
+            matrix[i][j] += max(i - 1 >= 0 ? matrix[i - 1][j] : 0, j - 1 >= 0 ? matrix[i][j - 1] : 0);
+        }
+    }
+    printMatrix(matrix);
+    return matrix[n - 1][n - 1];
+}
+
+int main()
+{
+    auto matrix = generateSpecificMatrix();
+    printMatrix(matrix);
+    std::cout << getMaxWay(matrix);
+    return 0;
+}