把《编程珠玑》读薄

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// 版本1
void InsertSort(int a[], int n) {
    for(int i=1; i<n; ++i)
        for(int j=i; j>0 && a[j-1]>a[j]; --j)
            swap(a[j-1], a[j]);
}
// 版本2
void InsertSort1(int a[], int n) {
    for(int i=1; i<n; ++i) {
        int t = a[i];
        int j = i;
        for(; j>0 && a[j-1]>t; --j)
            a[j] = a[j-1];
        a[j] = t;
    }
}

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// 数组快排
void QSort(int a[], int head, int end) {
    if(a==NULL || head==end) return;
    int slow = head, fast = head + 1;
    int pivot = a[head];
    while(fast != end) {
        if(a[fast] <= pivot)
            swap(a[++slow], a[fast]);
        ++fast;
    }
    swap(a[head], a[slow]);
    QSort(a, head, slow);
    QSort(a, slow+1, end);
}

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// 单链表快排
void qsort(Node *head, Node *end){
    if(head==NULL || head==end) return;
    Node *slow = head, *fast = head->next;
    int pivot = head->data;
    while(fast != end){
        if(fast->data <= pivot){
            slow = slow->next;
            swap(slow->data, fast->data);
        }
        fast = fast->next;
    }
    swap(head->data, slow->data);
    qsort(head, slow);
    qsort(slow->next, end);
}

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int partition(int a[], int low, int high){
    int pivot = a[low], i=low, j=high;
    while(i < j){
        while(i<j && a[j]>pivot) --j;
        if(i < j) swap(a[i], a[j]);
        while(i<j && a[i]<=pivot) ++i;
        if(i < j) swap(a[i], a[j]);
    }
    return i;
}
void quicksort(int a[], int first, int last){
    if(first<last){
        int k = partition(a, first, last);
        quicksort(a, first, k-1);
        quicksort(a, k+1, last);
    }
}

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int partition(int a[], int low, int high){
    int pivot = a[low], i=low, j=high;
    while(i<j){
        while(i<j && a[j]>pivot) --j;
        if(i<j) a[i++] = a[j];
        while(i<j && a[i]<=pivot) ++i;
        if(i<j) a[j--] = a[i];
    }
    a[i] = pivot;
    return i;
}

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void GenKnuth(int m, int n) {
	for(int i=0; i<n; ++i) {
		if((bigrand()%(n-i)) < m) {
			cout<<i<<endl;
			--m;
		}
	}
}

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void GenSets(int m, int n) {
	set<int> s;
	while(s.size() < m)
		s.insert(bigrand() % n);
	set<int>::iterator i;
	for(i=s.begin(); i!=s.end(); ++i)
		cout<<*i<<endl;
}

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void GenShuf(int m, int n) {
	int x[n];
	for(int i=0; i<n; ++i)
		x[i] = i;
	for(int i=0; i<m; ++i) {
		int j = randint(i, n-1);
		swap(x[i], x[j]);
	}
	sort(x, x+m);
	for(int i=0; i<m; ++i)
		cout<<x[i]<<endl;
}

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struct Node {
    int data;
    Node *lchild, *rchild, *parent;
    Node(): lchild(NULL), rchild(NULL), parent(NULL) { }
};

class BST {
private:
    static const int kMax = 1000;
    Node *root_, *parent_, nodes_[kMax];
    int size_;

private:
    Node* minimum(Node* node);
    Node* maximum(Node* node);
    Node* successor(Node* node);
    Node* predecessor(Node* node);
    void Insert(Node* &node, int x);
    void InorderTraver(Node* node);
    Node* Find(Node* node, int x);
    
public:
    BST(): root_(NULL), parent_(NULL), size_(0) {
        memset(nodes_, '\0', sizeof(nodes_));
    }
    void Insert(int x);
    void InorderTraver();
    Node* Find(int x);
    void Remove(Node* z);
};

Node* BST::minimum(Node* node) {
    if(node == NULL) return NULL;
    while(node->lchild)
        node = node->lchild;
    return node;
}

Node* BST::maximum(Node* node) {
    if(node == NULL) return NULL;
    while(node->rchild)
        node = node->rchild;
    return node;
}

Node* BST::successor(Node* node) {
    if(node->rchild)
        return minimum(node->rchild);
    Node *y = node->parent;
    while(y && node==y->rchild) {
        node = y;
        y = node->parent;
    }
    return y;
}

Node* BST::predecessor(Node* node) {
    if(node->lchild)
        return maximum(node->lchild);
    Node *y = node->parent;
    while(y && node==y->lchild) {
        node = y;
        y = node->parent;
    }
    return y;
}

void BST::Insert(Node* &node, int x) {
    if(node == NULL) {
        nodes_[size_].data = x;
        nodes_[size_].parent = parent_;
        node = &nodes_[size_];
        ++size_;
        return;
    }
    parent_ = node;
    if(x < node->data)
        Insert(node->lchild, x);
    else
        Insert(node->rchild, x);
}

void BST::Insert(int x) {
    Insert(root_, x);
}

void BST::InorderTraver(Node* node) {
    if(node == NULL) return;
    InorderTraver(node->lchild);
    cout<<node->data<<" ";
    InorderTraver(node->rchild);
}

void BST::InorderTraver() {
    InorderTraver(root_);
}

Node* BST::Find(Node* node, int x) {
    if(node == NULL) return NULL;
    if(x < node->data) return Find(node->lchild, x);
    else if(x > node->data) return Find(node->rchild, x);
    else return node;
}

Node* BST::Find(int x) {
    return Find(root_, x);
}

void BST::Remove(Node* z) {
    if(!z->lchild && !z->rchild) {
        if(z == root_) root_ = NULL;
        else if(z == z->parent->lchild)
            z->parent->lchild = NULL;
        else
            z->parent->rchild = NULL;
    }

    else if(z->lchild==NULL || z->rchild==NULL) {
        if(z == root_) {
            if(z->lchild) root_ = z->lchild;
            else root_ = z->rchild;
            root_->parent = NULL;
        }
        else {
            if(z==z->parent->lchild && z->lchild) {
                z->parent->lchild = z->lchild;
                z->lchild->parent = z->parent;
            }
            else if(z==z->parent->lchild && z->rchild) {
                z->parent->lchild = z->rchild;
                z->rchild->parent = z->parent;
            }
            else if(z==z->parent->rchild && z->lchild) {
                z->parent->rchild = z->lchild;
                z->lchild->parent = z->parent;
            }
            else {
                z->parent->rchild = z->rchild;
                z->rchild->parent = z->parent;
            }
        }
    }

    else {
        Node *s = predecessor(z);
        z->data = s->data;
        if(z == s->parent)
            s->parent->lchild = s->lchild;
        else
            s->parent->rchild = s->lchild;

        if(s->lchild)
            s->lchild->parent = s->parent;
    }
}

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// 最大堆实现, 数组下标从1开始，a[0]不使用。

// 交换两数
void swap(int &a, int &b) {
    int t = a;
    a = b;
    b = t;
}

// 把第i个元素向上移动
void ShiftUp(int a[], int i) {
    while(i>1 && a[i]>a[i/2]) {
        swap(a[i], a[i/2]);
        i >>= 1;
    }
}

// 把第i个元素向下移动
void ShiftDown(int a[], int n, int i) {
    while((i=2*i) <= n) {
        if(i+1<=n && a[i+1]>a[i]) ++i;
        if(a[i] > a[i/2]) swap(a[i], a[i/2]);
        else break;
    }
}

// 把数组a变成具备最大堆性质的数组
void MakeHeap(int a[], int n) {
    for(int i=n/2; i>0; --i)
        ShiftDown(a, n, i);
}

// 向堆中插入元素x
void Insert(int a[], int &n, int x) {
    a[++n] = x;
    ShiftUp(a, n);
}

// 删除堆中第i个元素
void Del(int a[], int &n, int i) {
    a[i] = a[n--];
    if(i>1 && a[i]>a[i/2]) ShiftUp(a, i);
    else ShiftDown(a, n, i);
}

// 堆排序，时间复杂度O(nlogn)
void HeapSort(int a[], int n) {
    MakeHeap(a, n);
    for(int i=n; i>1; --i) {
        swap(a[i], a[1]);
        ShiftDown(a, i-1, 1);
    }
}

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int main(void) {
	set<string> s;
	set<string>::iterator j;
	string t;
	while(cin >> t)
		s.insert(t);
	for(j=s.begin(); j!=s.end(); ++j)
		cout<<*j<<endl;
	return 0;
}

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int main(void) {
	map<string, int> m;
	map<string, int>::iterator j;
	string t;
	while(cin >> t)
		m[t]++;
	for(j=m.begin(); j!=m.end(); ++j)
		cout<<j->first<<" "<<j->second<<endl;
	return 0;
}

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class Hash {
public:
    Hash(): seed_(131), size_(0) {
        memset(head_, 0, sizeof(head_));
    }
    
    void Insert(const char* str) {
        unsigned int id = hash(str);
        char *dst = (char*)node_[size_].word;
        while(*dst++ = *str++);
        node_[size_].next = head_[id];
        head_[id] = &node_[size_];
        ++size_;
    }

    bool Find(const char* str) {
        unsigned int id = hash(str);
        for(Node* p=head_[id]; p; p=p->next) {
            char* dst = (char*)p->word;
            int i = 0;
            for(; *(str+i) && *(str+i)==*(dst+i); ++i);
            if(!*(str+i) && !*(dst+i)) return true;
        }
        return false;
    }
    
private:
    unsigned int hash(const char* str) {// BKDR Hash Function
        unsigned int hash = 0;
        while(*str) {
            hash = hash * seed_ + (*str++);
        }
        return (hash & 0x7FFFFFFF) % kHashSize;
    }
    
private:
    unsigned int seed_;
    unsigned int size_;
    static const int kWordSize = 26 + 1;
    static const int kNodeSize = 20000;
    static const int kHashSize = 10001;
    struct Node {
        char word[kWordSize];
        Node *next;
    };
    Node node_[kNodeSize];
    Node* head_[kHashSize];
};

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inline bool cmp(char* p, char*q) {
    return strcmp(p, q) < 0;
}