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匿名用户2020.04.11回答#include<iostream>#include<cstdlib>usingnamespacestd;intmain(){inti,j,k,t,a[20];for(i=0;i<20;i++)//或者用cin>>a[i];{a[i]=rand()%100;cout<<a[i]<<"";}cout<<endl;for(i=1;i<20-2;i+=2){k=i;for(j=i+2;j<20;j+=2)if(a[j]<a[k])k=j;t=a[i];a[i]=a[k];a[k]=t;}for(i=0;i<20;i++)cout<<a[i]<<"";cout<<endl;return0;}#include<iostream>#include<cstdlib>usingnamespacestd;intmain(){inti,j,k,t,a[20];for(i=0;i<20;i++)//cin>>a[i];{a[i]=rand()%100;cout<<a[i]<<"";}cout<<endl;for(i=1;i<20-2;i+=2){k=i;for(j=i+2;j<20;j+=2)if(a[j]<a[k])k=j;t=a[i];a[i]=a[k];a[k]=t;}for(i=0;i<20;i++)cout<<a[i]<<"";cout<<endl;return0;}