二维数组中的联合查找(Java)

public class TwoDimensionalArraySearch {
    public static boolean search(int[][] matrix, int target) {
        int rows = matrix.length;
        int cols = matrix[0].length;
        
        int row = 0;
        int col = cols - 1;
        
        while (row < rows && col >= 0) {
            if (matrix[row][col] == target) {
                return true;
            } else if (matrix[row][col] > target) {
                col--;
            } else {
                row++;
            }
        }
        
        return false;
    }
    
    public static void main(String[] args) {
        int[][] matrix = {
            {1, 4, 7, 11, 15},
            {2, 5, 8, 12, 19},
            {3, 6, 9, 16, 22},
            {10, 13, 14, 17, 24},
            {18, 21, 23, 26, 30}
        };
        
        int target = 9;
        
        boolean found = search(matrix, target);
        
        if (found) {
            System.out.println("目标元素 " + target + " 存在于二维数组中。");
        } else {
            System.out.println("目标元素 " + target + " 不存在于二维数组中。");
        }
    }
}