void print_LCS(char** matrix, char* a, char* b, int i, int j)
{
if (i == 0 || j == 0)
return;
if (a[i - 1] == b[j - 1])
{
print_LCS(matrix, a, b, i - 1, j - 1);
printf("%c", a[i - 1]);
}
else if (matrix[i][j] == matrix[i - 1][j])
print_LCS(matrix, a, b, i - 1, j);
else
print_LCS(matrix, a, b, i, j - 1);
}
void print_LCS(int i, int j)
{
// 第一個或第二個序列為空集合就停止
if (i==0 || j==0) return;
if (direction[i][j] == 1)
{
print_LCS(i-1, j-1);
printf("%c ", input1[i-1]); // 印出LCS的元素
}
else if (direction[i][j] == 3)
print_LCS(i-1, j);
else if (direction[i][j] == 2)
print_LCS(i, j-1);
}
int main(int argc, char** argv)
{
if (argc < 3) {
puts("Nombre de parametres insuffisants");
return 1;
}
size_a = strlen(argv[1]);
size_b = strlen(argv[2]);
// int size_lcs = get_size_of_lcs(argv[1], argv[2], 0, 0);
// printf("%d\n", size_lcs);
char** matrix = build_path(argv[1], argv[2]);
display_matrix(matrix, size_a+2, size_b+2);
print_LCS(matrix, argv[1], argv[2], size_a, size_b);
return 0;
}
int main(){
printf("input the first string : ");
scanf("%s",input1);
printf("input the second string : ");
scanf("%s",input2);
int input1_length = strlen(input1);
int input2_length = strlen(input2);
for(int i=0;i<input1_length;i++){
for(int j=0;j<input2_length;j++){
if(input1[i] == input2[j]){
lcs[i+1][j+1] = lcs[i][j] + 1;
direction[i+1][j+1] = 1;
}else{
if (lcs[i][j+1] < lcs[i+1][j])
{
lcs[i+1][j+1] = lcs[i+1][j];
direction[i+1][j+1] = 2;
}
else
{
lcs[i+1][j+1] = lcs[i][j+1];
direction[i+1][j+1] = 3;
}
}
}
}
for(int i=0;i<=input1_length;i++){
for(int j=0;j<=input2_length;j++){
printf("%d ",lcs[i][j]);
}
printf("\n");
}
printf("LCS的長度是%d\n", lcs[input1_length][input2_length]) ;
printf("LCS是\n");
print_LCS(input1_length, input2_length);
system("pause");
return 0;
}
