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好像二分有问题, 我的是这样:In Reply To:DP+二分查找,错哪了? Posted by:yiyiyi4321 at 2005-12-16 11:04:28 你里面的if有问题,另外我这总是可以保证j是D[1]到D[len]中 满足D[j]<A[i]的最大的一个 else{ //二分查找 low = 1; high = len; j = 0; while(low<=high){ mid = (low + high)>>1; if(D[mid]<A[i]&&D[mid+1]>=A[i]){j=mid;break;} if(D[mid]<A[i]){ j=mid; low = mid+1; } else { high = mid-1; } } D[j+1]=A[i]; //更新 } Followed by:
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