Write one or a few methods to search for a value in an m*n matrix. This matrix has the following properties: Integers in each row are sorted from left to right. The first integer of each row is...

Please answer the question in the screenshot. The language used is Java.

Extracted text: Write one or a few methods to search for a value in an m*n matrix. This matrix has the following properties: Integers in each row are sorted from left to right. The first integer of each row is greater than the last integer of the previous row. For example, consider the following matrix: {{1, 3, 5, 7}, {10, 11, 16, 20}, {23, 30, 34, 50}} Given target = 3, return true. Note: Your method should start with the required name and parameters: class PatternChecker { public boolean searchMatrix(int[][] matrix, int target) { //... } }