45 lines
1.0 KiB
Java
Executable File
45 lines
1.0 KiB
Java
Executable File
package com.thinker.bishi.offer;
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/**
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* 剑指offer面试题三。
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* 题目：在一个二维数组中，每一行都按照从左到右递增的顺序排序，每一列都按照从上到下递增的顺序排序。请完成
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*/
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public class Offer_3 {
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private static int[][] arr= new int[][]{
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{1,2,8,9},
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{2,4,9,12},
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{4,7,10,13},
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{6,8,11,15}
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};
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private static int rows = 0;
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private static int lines = 0;
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public static void init(){
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lines = arr.length;
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rows = arr[0].length;
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}
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public static boolean go(int find){
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boolean flag = false;
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int i = 0,j = rows-1;
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while (i<lines && j>=0){
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if(arr[i][j]==find){
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flag = true;break;
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}else if(arr[i][j] > find){
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j--;
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}else if(arr[i][j] < find){
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i++;
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}
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}
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return flag;
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}
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public static void main(String[] args) {
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init();
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boolean exit = go(7);
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System.out.println(exit);
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}
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}
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