leetCode/src/main/java/com/leetcode/simple/SearchSortedMatrix.java

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2020-11-15 06:26:19 +00:00
package com.leetcode.simple;
2020-02-23 14:02:58 +00:00
/**
* @apiNote 写出一个高效的算法来搜索 m × n矩阵中的值这个矩阵具有以下特性
* 每行中的整数从左到右是排序的
* 每行的第一个数大于上一行的最后一个整数
* @author zeekling
* @version 1.0
* @since 2019-12-14
*/
public class SearchSortedMatrix {
/**
* @param matrix: matrix, a list of lists of integers
* @param target: An integer
* @return: a boolean, indicate whether matrix contains target
*/
public boolean searchMatrix(int[][] matrix, int target) {
// write your code here
if (matrix.length == 0 || matrix[0].length == 0){
return false;
}
int row=0,line=matrix.length-1, len=matrix[0].length;
while(row < len && line >= 0){
if(matrix[line][row] == target){
return true;
}
if (matrix[line][row] < target){
row ++;
}else{
line --;
}
}
return false;
}
}