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// 240. Search a 2D Matrix II java solution
class Solution {
    public boolean searchMatrix(int[][] matrix, int target) {
        int i=0;
        int j=matrix[0].length-1;

        while( i<matrix.length && j>=0){
            if(matrix[i][j]==target){
                return true;
            }else if(matrix[i][j]>target){
                j--;
            }else{
                i++;
            }
        }
        return false;
    }
}