diff options
Diffstat (limited to 'prolog/problems/trees/deletebt_3/common.py')
| -rw-r--r-- | prolog/problems/trees/deletebt_3/common.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/prolog/problems/trees/deletebt_3/common.py b/prolog/problems/trees/deletebt_3/common.py new file mode 100644 index 0000000..76550f6 --- /dev/null +++ b/prolog/problems/trees/deletebt_3/common.py @@ -0,0 +1,17 @@ +id = 137 +group = 'trees' +number = 47 +visible = True +facts = None + +solution = '''\ +deleteBT(X, b(nil, X, nil), nil). +deleteBT(X, b(b(Ls, E, Rs), X, R), b(L, E, R)) :- + deleteBT(E, b(Ls, E, Rs), L). +deleteBT(X, b(L, X, b(Ls, E, Rs)), b(L, E, R)) :- + deleteBT(E, b(Ls, E, Rs), R). +deleteBT(X, b(L, E, R), b(L1, E, R)) :- + deleteBT(X, L, L1). +deleteBT(X, b(L, E, R), b(L, E, R1)) :- + deleteBT(X, R, R1). +''' |