Search a 2D Matrix

class Solution {
    public boolean searchMatrix(int[][] matrix, int target) {
        if(matrix.length == 0) return false;
        int rows = matrix.length;
        int cols = matrix[0].length;
        
        int left = 0;
        int right = rows*cols-1;
        
        while(left <= right){
            int mid = left + (right-left)/2; // calculates the mid point of 1D array.
            int midElement = matrix[mid/cols][mid%cols]; // converting midpoint of 1D array to 2D array
            if(midElement == target) return true;
            if(midElement < target) left = mid+1;
            else right = mid-1;
        }
        return false;
    }
}

Similar codes

1 vote390 views1 answer
Javafx add event handler to button
Java
6 votes311 views2 answers
Abstract vs interface java
Java
0 vote369 views2 answers
Java exception list
Java
1 vote334 views1 answer
How to close the fragment by a close button in android
Java
16 votes353 views5 answers
Converting char array to string
Java
1 vote338 views3 answers
Android studio json parser
Java
0 vote376 views1 answer
How to make bidirectional fromated binding
Java
0 vote348 views2 answers
Change url by jquery without refresh page
Java
0 vote331 views1 answer
Java mockito print called methods
Java
1 vote349 views1 answer
While looping in java
Java