注：java主要可以利用字符串的length方法求出长度解决这个问题带来方便
public class FindNum {
public static void main(String[] args) {
int arry[][] = {{1, 2, 8, 9}, {2, 4, 9, 12}, {4, 7, 10, 13}, {6, 8, 11, 15}};
int findnum = 12;
if(find(arry,findnum)){
System.out.println("find");
}
else
System.out.println("Not find");
}
private static boolean find(int[][] arry, int findnum) {
if(arry==null){
System.out.println("arry is null!");
return false;
}
boolean findflag = false;//设置寻找标志
int rows = arry.length;//获取二维数组总的行数
int row = 0;
int colum = arry[0].length-1;//数组的列数
while(row<rows&&colum>=0){
if(arry[row][colum]==findnum){
findflag = true;
break;
}
else if(arry[row][colum]>findnum)
colum--;
else
row++;
}
return findflag;
}
}