原题题目
代码实现(首刷自解)
int cmp(const void* a,const void* b)
{
return *(int*)a - *(int*)b;
}int lastStoneWeightII(int* stones, int stonesSize){
int i,j,sum = 0,min = INT_MAX-1;for(i=0;i<stonesSize;i++)sum += stones[i];int scale = sum/2+1;int dp[31][10000];qsort(stones,stonesSize,sizeof(int),cmp);for(i=0;i<stonesSize;i++){
for(j=1;j<=scale;j++){
if(j == stones[i] || (i>=1 && dp[i-1][j])){
dp[i][j] = 1;if(fabs(sum - j - j) < min) min = fabs(sum - j - j);}if(i>=1 && dp[i-1][j] && j+stones[i] <=scale){
dp[i][j+stones[i]] = 1;if(fabs(sum - j - stones[i] - j - stones[i]) < min) min = fabs(sum - j - stones[i] - j - stones[i]);}}}return min;
}