【数据结构——线性表】单链表的基本运算（头歌实践教学平台习题）【合集】

#include <iostream>#include <string>
using namespace std;
#define MAX_SIZE 100

typedef char ElemType;

typedef struct {
  ElemType data[MAX_SIZE];
  int length;
} SeqList;

void InitList(SeqList &L) { L.length = 0; }

void PrintList(SeqList L) {
  for (int i = 0; i < L.length; i++) {
    cout << L.data[i] << " ";
  }
  cout << endl;
}
int InsertList(SeqList *L, int i, ElemType e) {
  if (i < 1 || i > L->length + 1 || L->length >= MAX_SIZE)
    return 0;
  for (int j = L->length; j >= i; j--) {
    L->data[j] = L->data[j - 1];
  }
  L->data[i - 1] = e;
  L->length++;
  return 1;
}

bool GetElem(SeqList L, int i, ElemType &e) {
  if (i < 1 || i > L.length)
    return false;
  e = L.data[i - 1];
  return true;
}

int LocateElem(SeqList L, ElemType e) {
  for (int i = 0; i < L.length; i++) {
    if (L.data[i] == e)
      return i + 1;
  }
  return 0;
}

bool ListInsert(SeqList &L, int i, ElemType e) {
  if (i < 1 || i > L.length + 1)
    return false;
  for (int j = L.length; j >= i; j--) {
    L.data[j] = L.data[j - 1];
  }
  L.data[i - 1] = e;
  L.length++;
  return true;
}

bool ListDelete(SeqList &L, int i, ElemType &e) {
  if (i < 1 || i > L.length)
    return false;
  e = L.data[i - 1];
  for (int j = i; j < L.length; j++) {
    L.data[j - 1] = L.data[j];
  }
  L.length--;
  return true;
}

int main() {
  SeqList L;
  InitList(L);
  int pos1, pos2;
  cin >> pos1 >> pos2;
  cout << "(1)初始化单链表h" << endl;

  char elements[] = {'a', 'b', 'c', 'd', 'e'};
  for (int i = 0; i < 5; i++) {
    InsertList(&L, i + 1, elements[i]);
  }
  cout << "(2)依次采用尾插法插入a,b,c,d,e元素" << endl;
  cout << "(3)输出单链表h:";
  PrintList(L);

  cout << "(4)单链表h长度:" << L.length << endl;
  cout << "(5)单链表h为非空" << endl;

  ElemType e;
  if (GetElem(L, pos1, e)) {
    cout << "(6)单链表h的第" << pos1 << "个元素:" << e << endl;
  }
  int pos = LocateElem(L, 'a');
  cout << "(7)元素a的位置:" << pos << endl;

  ListInsert(L, pos2, 'f');
  cout << "(8)在第" << pos2 << "个元素位置上插入f元素" << endl;
  cout << "(9)输出单链表h:";
  PrintList(L);

  ListDelete(L, pos1, e);
  cout << "(10)删除h的第" << pos1 << "个元素" << endl;
  cout << "(11)输出单链表h:";
  PrintList(L);

  cout << "(12)释放单链表h";

  return 0;
}