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

3 votes245 views1 answer
Assert system.out.println
Java
0 vote189 views2 answers
Spring boot base url
Java
1 vote180 views1 answer
Jdk path ubuntu
Java
51 votes215 views6 answers
Java array print
Java
0 vote202 views2 answers
Constraints in grails
Java
0 vote211 views3 answers
How to move get selected from jfxtreetableview javafx
Java
10 votes181 views4 answers
Java method to capitalize first letter
Java
0 vote175 views1 answer
Java.applet defines how many interfaces
Java
6 votes176 views2 answers
Java random seed
Java
0 vote234 views1 answer
Como apanhar caracter de uma string em java
Java