Cari matriks 2D
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;
}
}
Prabhu Kiran Konda