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Re:说下一种解法 329msIn Reply To:说下一种解法 329ms Posted by:785815369 at 2010-07-30 11:51:59 > 遍历位置1~n 当位置i的值a[i]!=i时说明不对 找到值为i的位置j 即a[j]==i 交换a[i]与 > a[j] 同时总交换数sum++ > > > 核心代码如下 > > int swaps(int n) > { > int sum=0; > for(int i=1;i<n;i++) > { > if(a[i]!=i) > { > sum++; > int j; > for(j=i+1;j<=n;j++) > if(a[j]==i)break; > swap(a[i],a[j]); > } > } > return sum; > } Followed by:
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