From 31162629a08bc2d3c9a8a4ca5ee58f35c01cea1e Mon Sep 17 00:00:00 2001 From: Santo Cariotti Date: Sun, 3 May 2020 18:34:18 +0200 Subject: fix: pop w value --- I_anno/Programmazione_2/data_structures/list.cc | 30 ++++++++++++------- .../data_structures/list_double.cc | 34 ++++++++++++---------- 2 files changed, 38 insertions(+), 26 deletions(-) diff --git a/I_anno/Programmazione_2/data_structures/list.cc b/I_anno/Programmazione_2/data_structures/list.cc index 02ae2fd..2aa97de 100644 --- a/I_anno/Programmazione_2/data_structures/list.cc +++ b/I_anno/Programmazione_2/data_structures/list.cc @@ -72,6 +72,23 @@ public: return this; } + list* pop(int val) { + if(_head == nullptr) + return this; + else if(_head->value == val) + return pop_front(); + + node* iter = _head; + while(iter && iter->next && iter->next->value != val) + iter = iter->next; + + node* temp = iter->next; + iter->next = iter->next->next; + delete temp; + + return this; + } + list* pop_front() { if(_head == nullptr) return this; @@ -138,17 +155,8 @@ int main() { l->print(); cout << endl; l->push_front(1); l->print(); cout << endl; - - // output - // 1 2 - // 1 2 5 - // 1 2 5 10 15 - // 1 2 5 6 10 15 - // 1 2 4 5 6 10 15 - // 1 2 3 4 5 6 10 15 - // 1 2 3 4 5 6 10 - // 2 3 4 5 6 10 - // 1 2 3 4 5 6 10 + l->pop(1); + l->print(); cout << endl; return 0; } diff --git a/I_anno/Programmazione_2/data_structures/list_double.cc b/I_anno/Programmazione_2/data_structures/list_double.cc index b229237..d8dda99 100644 --- a/I_anno/Programmazione_2/data_structures/list_double.cc +++ b/I_anno/Programmazione_2/data_structures/list_double.cc @@ -82,6 +82,24 @@ public: return this; } + list* pop(int val) { + if(_head == nullptr) + return this; + else if(_head->value == val) + return pop_front(); + + node* iter = _head; + while(iter && iter->next && iter->next->value != val) + iter = iter->next; + + node* temp = iter->next; + iter->next = iter->next->next; + iter->next->prev = iter; + delete temp; + + return this; + } + list* pop_front() { if(_head == nullptr) return this; @@ -151,22 +169,8 @@ int main() { l->print(); cout << endl; l->pop_front(); l->print(); cout << endl; - l->pop_back(); + l->pop(2); l->print(); cout << endl; - // output - /* - * 1 [[ -1, 2 ]], 2 [[ 1, -1 ]], - * 1 [[ -1, 2 ]], 2 [[ 1, 5 ]], 5 [[ 2, -1 ]], - * 1 [[ -1, 2 ]], 2 [[ 1, 5 ]], 5 [[ 2, 10 ]], 10 [[ 5, 15 ]], 15 [[ 10, -1 ]], - * 1 [[ -1, 2 ]], 2 [[ 1, 5 ]], 5 [[ 2, 6 ]], 6 [[ 5, 10 ]], 10 [[ 6, 15 ]], 15 [[ 10, -1 ]], - * 1 [[ -1, 2 ]], 2 [[ 1, 5 ]], 5 [[ 2, 7 ]], 7 [[ 5, 6 ]], 6 [[ 7, 10 ]], 10 [[ 6, 15 ]], 15 [[ 10, -1 ]], - * 1 [[ -1, 2 ]], 2 [[ 1, 4 ]], 4 [[ 2, 5 ]], 5 [[ 4, 7 ]], 7 [[ 5, 6 ]], 6 [[ 7, 10 ]], 10 [[ 6, 15 ]], 15 [[ 10, -1 ]], - * 1 [[ -1, 2 ]], 2 [[ 1, 4 ]], 4 [[ 2, 3 ]], 3 [[ 4, 5 ]], 5 [[ 3, 7 ]], 7 [[ 5, 6 ]], 6 [[ 7, 10 ]], 10 [[ 6, 15 ]], 15 [[ 10, -1 ]], - * 1 [[ -1, 2 ]], 2 [[ 1, 4 ]], 4 [[ 2, 3 ]], 3 [[ 4, 5 ]], 5 [[ 3, 7 ]], 7 [[ 5, 6 ]], 6 [[ 7, 10 ]], 10 [[ 6, -1 ]], - * 2 [[ -1, 4 ]], 4 [[ 2, 3 ]], 3 [[ 4, 5 ]], 5 [[ 3, 7 ]], 7 [[ 5, 6 ]], 6 [[ 7, 10 ]], 10 [[ 6, -1 ]], - * 2 [[ -1, 4 ]], 4 [[ 2, 3 ]], 3 [[ 4, 5 ]], 5 [[ 3, 7 ]], 7 [[ 5, 6 ]], 6 [[ 7, -1 ]], - */ - return 0; } -- cgit v1.2.3-18-g5258