先去除不符合的列,再去除不符合的行,直到遍历完

public class Solution {
    public boolean Find(int target, int [][] array) {

        for(int i = array.length-1; i >= 0; i--){
            
            if(array[i].length < 1){
                return false;
            }
            
            if(array[i][0] > target){
                continue;
            }
            
            for(int j = 0; j < array[i].length; j++){
                
                if(array[i][j] == target){
                    return true;
                }
                
                if(array[i][j] < target){
                    continue;
                }
                
                
            }
            
        }
        
        return false;
    }
    
    
}