动态规划串行算法
写了两天。。感觉确实需要多些代码了。T T
void give_global_traceback(sequence &seq1,sequence &seq2,sequence &alseq1,sequence &alseq2,int db[][k])
{
memset(alseq1.bp, 0, sizeof(char)*k);
memset(alseq2.bp, 0, sizeof(char)*k);
int a = 0, b = 0, c = 0;
//从右下角开始找起,seq2是纵向序列,seq1是横向序列
int tb_i = seq1.size; //矩阵中横向的记录
int tb_j = seq2.size; //矩阵中纵向的记录
while(tb_i >= 0 || tb_j >= 0)
{
if(tb_i == 0 && tb_j == 0) //到左上角了,跳出
{
break;
}
else if(tb_i == 0 && tb_j > 0) //到左边沿了,往上走
{
alseq1.bp[al_i] = 'x';
tb_j--;
alseq2.bp[al_j] = seq2.bp[tb_j];
}
else if(tb_j == 0 && tb_i > 0) //到上边沿了,往左走
{
alseq1.bp[al_i] = seq1.bp[tb_i];
tb_i--;
alseq2.bp[al_j] = 'x';
}
else
{
a = db[tb_j][tb_i-1];
b = db[tb_j-1][tb_i];
c = db[tb_j-1][tb_i-1];
if (a > b && a > c) //对纵向序列插空
{
alseq1.bp[al_i] = seq1.bp[tb_i - 1];
tb_i--;
alseq2.bp[al_j] = 'x';
}
else if (b > a && b > c) //对横向序列插空
{
alseq1.bp[al_i] = 'x';
tb_j--;
alseq2.bp[al_j] = seq2.bp[tb_j - 1];
}
else //不插空
{
alseq1.bp[al_i] = seq1.bp[tb_i - 1];
alseq2.bp[al_j] = seq2.bp[tb_j - 1];
tb_i--;
tb_j--;
}
}
al_i++;
al_j++;
}
}