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哪位牛人可以帮忙解释一下？这样为什么可以啊？看不懂什么意思！

Posted by 540907010146 at 2010-07-24 17:40:49 on Problem 2182
In Reply To:我O(N^2)的算法 100+MS过了，代码仅17行。。。。 Posted by:wiseking at 2009-10-27 21:39:50

for(i=2;i<=n;i++){
    scanf("%d\n",&k);
    k++;
    for(j=i;j>k;j--)a[j]=a[j-1];
    a[k]=i;
    };
  for(i=1;i<=n;i++)f[a[i]]=i;
  for(i=1;i<=n;i++)cout<<f[i]<<endl;
貌似以前见过这个写法，可是看了老半天，真的看不懂！

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