无论是多少维的数组,机内都是一维的,以行优先存放。所以直接降为一维数组排序最方便省事。下面以二维数组为例写出代码——include "stdio.h"int main(int argc,char *argv[]){int x[3][3]={{9,4,3},{6,2,7},{5,8,1}},i,j,k,*p;printf("Before ordering is as follows:\n");...
} }//qsort的cmp函数int cmp(const void*a, const void *b){ return *(int*)a-*(int*)b;}int main(int argc, char* argv){ int a[M][N]={3,2,1,9,8,7,6,5,4}; printf("按列排序前的二维数组是:\n"); print(a); printf("\n"); int j; for...
就好比每个学生3门成绩,对英语成绩进行排序。这在数据库管理中叫索引排序 include<stdio.h>#define N 3#define M 3void main() { int a[N][M]={ {1,5,8},{7,8,3},{4,6,5} },i,j,k,index[N]; for ( i=0;i<N;i++ ) index[i]=i; //index数组记录原始顺序 for ...
如何使⽤python来对⼆维数组进⾏排序1、复合排序 直接⽤numpy的lexsort就可以 import numpy as np data = np.array([[1,2,3,4,5], [1,2,3,6,7], [2,3,4,5,7], [3,4,5,6,7], [4,5,6,7,8]])idex=np.lexsort([-1*data[:,2], data[:,1], data[:,0]])#先按第⼀列...
* 二维数组根据某个字段排序 * 功能:按照用户的年龄倒序排序 * @author ruxing.li * @edit www.jbxue.com*/header('Content-Type:text/html;Charset=utf-8');$arrUsers=array(array('id' => 1, 'name' => '张三', 'age' => 25,),array('id' => 2, ...