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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class Bai4 {
  5. private:
  6.     int* arr;
  7.     int sl;
  8.     bool TonTai(int x) const {
  9.         for (int i = 0; i < sl; i++) {
  10.             if (arr[i] == x) return true;
  11.         }
  12.         return false;
  13.     }
  14.  
  15. public:
  16.     ~Bai4() {
  17.         delete[] arr;
  18.         arr = nullptr;
  19.         sl = 0;
  20.     }
  21.     Bai4(int s = 0) {
  22.         sl = s;
  23.         arr = (sl > 0) ? new int[sl] : nullptr;
  24.     }
  25.     Bai4(const Bai4 &other) {
  26.         sl = other.sl;
  27.         arr = new int[sl];
  28.         for (int i = 0; i < sl; i++) {
  29.             arr[i] = other.arr[i];
  30.         }
  31.     }
  32.     Bai4& operator=(const Bai4 &other) {
  33.         if (this != &other) {
  34.             delete[] arr;
  35.             sl = other.sl;
  36.             arr = new int[sl];
  37.             for (int i = 0; i < sl; i++) {
  38.                 arr[i] = other.arr[i];
  39.             }
  40.         }
  41.         return *this;
  42.     }
  43.     void Nhap() {
  44.         delete[] arr;
  45.         int n;
  46.         cin >> n;
  47.         arr = new int[n];
  48.         sl = 0;
  49.         for (int i = 0; i < n; i++) {
  50.             int val;
  51.             cin >> val;
  52.             if (!TonTai(val)) {
  53.                 arr[sl++] = val;
  54.             }
  55.         }
  56.     }
  57.     void Xuat() const {
  58.         cout << "{ ";
  59.         for (int i = 0; i < sl; i++) {
  60.             cout << arr[i] << " ";
  61.         }
  62.         cout << "}\n";
  63.     }
  64.     void ThemPhanTu(int x) {
  65.         if (TonTai(x)) return;
  66.         int* temp = new int[sl + 1];
  67.         for (int i = 0; i < sl; i++) {
  68.             temp[i] = arr[i];
  69.         }
  70.         temp[sl] = x;
  71.         delete[] arr;
  72.         arr = temp;
  73.         sl++;
  74.     }
  75.     void XoaPhanTu(int x) {
  76.         int pos = -1;
  77.         for (int i = 0; i < sl; i++) {
  78.             if (arr[i] == x) {
  79.                 pos = i;
  80.                 break;
  81.             }
  82.         }
  83.         if (pos == -1) return;
  84.         int* temp = new int[sl - 1];
  85.         for (int i = 0, j = 0; i < sl; i++) {
  86.             if (i == pos) continue;
  87.             temp[j++] = arr[i];
  88.         }
  89.         delete[] arr;
  90.         arr = temp;
  91.         sl--;
  92.     }
  93.     void Hop(const Bai4 &a) {
  94.         Bai4 kq = *this;
  95.         for (int i = 0; i < a.sl; i++) {
  96.             if (!kq.TonTai(a.arr[i])) {
  97.                 kq.ThemPhanTu(a.arr[i]);
  98.             }
  99.         }
  100.         cout << "Ket qua Hop: ";
  101.         kq.Xuat();
  102.     }
  103.     void Giao(const Bai4 &a) {
  104.         Bai4 kq;
  105.         for (int i = 0; i < sl; i++) {
  106.             if (a.TonTai(arr[i])) {
  107.                 kq.ThemPhanTu(arr[i]);
  108.             }
  109.         }
  110.         cout << "Ket qua Giao: ";
  111.         kq.Xuat();
  112.     }
  113.     void Tru(const Bai4 &a) {
  114.         Bai4 kq;
  115.         for (int i = 0; i < sl; i++) {
  116.             if (!a.TonTai(arr[i])) {
  117.                 kq.ThemPhanTu(arr[i]);
  118.             }
  119.         }
  120.         cout << "Ket qua Tru (A \\ B): ";
  121.         kq.Xuat();
  122.     }
  123. };
  124.  
  125. int main() {
  126.     Bai4 A, B;
  127.     A.Nhap();
  128.     B.Nhap();
  129.     A.Xuat();
  130.     B.Xuat();
  131.     A.Hop(B);
  132.     A.Giao(B);
  133.     A.Tru(B);
  134.     return 0;
  135. }
  136.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
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Standard input is empty
stdout
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{ 0 }
{ 0 }
Ket qua Hop: { 0 }
Ket qua Giao: { 0 }
Ket qua Tru (A \ B): { }
https://ideone.com/Utlzwk
Lời giải Bài 4
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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