课评: 转出学生归档(王子墨/张立坤/黄俊博)+ 周四班级总结 + 新生章梓皓档案 + C++示例代码

This commit is contained in:
chengzi
2026-09-29 22:43:54 +08:00
parent 6f57dfe67e
commit 73cce4c4f5
116 changed files with 6817 additions and 248 deletions

View File

@@ -0,0 +1,52 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n;
int arr[100100];
void print(){
for(int i = 1; i <= n; i++){
cout << arr[i] << " ";
}
cout << endl;
}
void bubbleSort(){
for(int i = 1; i <= n - 1; i++){ // i表示趟数
bool ok = true; // 没有进行交换过
for(int j = 1; j <= n - i; j++){ // 要比较的这个数的下标
if(arr[j] > arr[j+1]){
swap(arr[j], arr[j+1]);
ok = false;
}
}
if(ok){
break;
}
cout << "第" << i << "趟:";
print();
}
}
int main(){
cin >> n;
for(int i = 1; i <= n; i++){
cin >> arr[i];
}
bubbleSort();
return 0;
}
// 时间复杂度
// O(n*n) 最好时间复杂度 O(n) 最差时间复杂度O(n*n)
// 稳定的排序算法

Binary file not shown.

View File

@@ -0,0 +1,42 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n;
int arr[100100];
int main() {
cin >> n;
for(int i = 1; i <= n; i++) {
cin >> arr[i];
}
// 冒泡排序
for(int i = 1; i <= n - 1; i++) { // i表示的是趟数
bool ok = true; // 一开始我认为没有交换
for(int j = 1; j <= n - i; j++) { // j表示的是食指 j+1
if(arr[j] > arr[j+1]) {
swap(arr[j], arr[j+1]);
ok = false; // 交换过了
}
}
cout << "第" << i << "趟:";
for(int i = 1; i <= n; i++) {
cout << arr[i] << " ";
}
cout << endl;
if(ok) {
break;
}
}
cout << "最终:";
for(int i = 1; i <= n; i++) {
cout << arr[i] << " ";
}
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,22 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n;
int main(){
cin >> n;
int cnt = 0;
int curr = 1;
for(int i = 2; i <= n; i++){
// 第i格有多少米
curr = curr * 2;
cnt += curr;
}
cout << cnt;
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,44 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n;
int arr[100100];
void print(){
for(int i = 1; i <= n; i++){
cout << arr[i] << " ";
}
cout << endl;
}
void selectionSort(){
for(int i = 1; i <= n - 1; i++){ // i表示要交换的这个位置
int maxx = arr[i]; // minn是当前的最小值
int idx = i;
// 找到当前这一轮的最小值
for(int j = i + 1; j <= n; j++){
if(arr[j] > maxx) {
maxx = arr[j];
idx = j;
}
}
swap(arr[i], arr[idx]);
}
}
// 时间复杂度 O(n*n)
// 不稳定
int main(){
cin >> n;
for(int i = 1; i <= n; i++){
cin >> arr[i];
}
selectionSort();
print();
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,28 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n;
int arr[100100][100100];
int main(){
int n, m;
cin >> n >> m;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cin >> arr[i][j];
}
}
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cout << arr[i][j];
}
cout << endl;
}
return 0;
}

View File

@@ -0,0 +1,35 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n, m;
int a[110][110];
int b[110][110];
int main(){
cin >> n >> m;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cin >> a[i][j];
}
}
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cin >> b[i][j];
}
}
int cnt = 0;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
if(a[i][j] == b[i][j]){
cnt++;
}
}
}
cout << fixed << setprecision(2);
cout << 100.0 * cnt / (n * m) ;
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,33 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n, m, num, cnt = 0;
int arr[110][110];
int main(){
cin >> n >> m;
// 第一幅图
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cin >> arr[i][j];
}
}
// 第二幅图
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
// arr[i][j]
cin >> num;
if(num == arr[i][j]){
cnt++;
}
}
}
// 相同的像素块有cnt个 总数 n * m 相同的像素块 / 总数
// int z = n * m;
cout << fixed << setprecision(2) << 100.0 * cnt / (n * m);
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,39 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n, m;
int cnt = 0;
int a[110][110];
int b[110][110];
int main(){
cin >> n >> m;
// 第一幅画读入
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cin >> a[i][j];
}
}
// 第二幅图
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cin >> b[i][j];
}
}
// 对比两幅图的相同位置进行比较
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
if(a[i][j] == b[i][j]){
cnt++;
}
}
}
// 相同点数 除 n * m
cout << fixed << setprecision(2);
cout << 100.0 * cnt / (n * m);
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,20 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n, m;
int age;
int main(){
cin >> n >> m;
for(int i = 1; i <= n; i++){ // 第i行的所有数据
int maxx = 0;
for(int j = 1; j <= m; j++){
cin >> age;
maxx = max(age, maxx);
}
cout << maxx << endl;
}
return 0;
}

View File

@@ -0,0 +1,22 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n, m, age;
int main(){
cin >> n >> m;
for(int i = 1; i <= n; i++){
int maxx = 0;
for(int j = 1; j <= m; j++){
cin >> age;
maxx = max(maxx, age);
}
cout << maxx << endl;
}
return 0;
}

View File

@@ -0,0 +1,26 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n, m;
int a[110][110];
int main(){
cin >> n >> m;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cin >> a[i][j];
}
}
for(int j = 1; j <= m; j++){
int maxx = 0;
for(int i = 1; i <= n; i++) {
maxx = max(maxx, a[i][j]);
}
cout << maxx << " ";
}
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,34 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n, m;
int a[110][110];
int b[110][110];
int main(){
cin >> n >> m;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cin >> a[i][j];
}
}
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cin >> b[i][j];
}
}
int cnt = 0;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
a[i][j] += b[i][j];
cout << a[i][j] << " ";
}
cout << endl;
}
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,28 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n;
int arr[110][110];
int main(){
int n, m;
cin >> n >> m;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cin >> arr[i][j];
}
}
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
cout << arr[i][j] << " ";
}
cout << endl;
}
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,26 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n;
int arr[100100];
int main(){
double wut, tuv, tut; // 乌龟到终点的时间 兔子的速度 兔子休息的时间
cin >> wut >> tuv >> tut;
// 先求出兔子到终点的时间
double t = 1000.0 / tuv + tut;
if(t == wut){
cout << "tie";
} else if(t < wut){
cout << "rabbit";
} else {
cout << "turtle";
}
cout << endl;
cout << fixed << setprecision(2) << t;
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,19 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n;
int arr[100100];
int main(){
cin >> n;
long long cnt = 1;
for(int i = 1; i <= n; i++){
cnt = cnt * 2;
}
cout << cnt - 1;
return 0;
}

View File

@@ -0,0 +1,53 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n, num;
int s[100];
string str = "01";
// 10进制转换成 2进制
string f(int n){
if(n == 0) return "0";
string re = "";
while(n > 0){
int g = n % 2;
re = str[g] + re;
n /= 2;
}
return re;
}
int main(){
cin >> n;
int maxx = 0;
for(int i = 1; i <= n; i++){
cin >> num;
string curr = f(num);
int len = curr.size();
int idx = 0;
for(int j = len - 1; j >= 0; j--){
char c = curr[j];
if(c == '1'){
s[idx]++;
}
idx++;
}
maxx = max(maxx, idx); // 统计最长字符串
// cout << "当前这个数二进制是" << curr << " " << idx << endl;
}
int cnt = 0;
for(int i = 0; i < maxx; i++){
if(s[i] == n) {
cnt++;
}
}
cout << cnt;
return 0;
}

View File

@@ -0,0 +1,46 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
string s;
int main(){
getline(cin, s);
int len = s.size();
string curr = ""; // 当前这个字符串
int k = 1; // 需要多少个空格
int idx = 0; // 当前的下标
while(idx < len){
char c = s[idx];
if(c == ' '){
// 当遇到空格
string z = s.substr(idx, k);
bool ok = true;
for(char c1 : z){
if(c1 != ' ') {
ok = false;
break;
}
}
if(ok){
cout << curr << endl;
idx += k;
k++; // 下一次的空格要加一
curr = "";
continue;
}
}
curr += c;
if(idx == len - 1){
cout << curr << endl;
}
idx++;
}
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,36 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
string s;
int main() {
getline(cin, s);
int len = s.size();
string curr = ""; // 要输出的这个字符串
int kg = 1; // 中断的空格数量
int cnt = 0; // 当前空格的数量
for(char c : s) {
curr += c;
if(c == ' ') {
cnt++;
} else {
cnt = 0;
}
if(cnt == kg) {
cout << curr << endl;
cnt = 0;
kg++;
curr = "";
}
}
if(curr.size() >= 1) {
cout << curr << endl;
}
return 0;
}

View File

@@ -0,0 +1,30 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
string s;
int main(){
getline(cin, s);
string kg = "";
int l = 0, r = 0;
while(true){
kg = kg + ' ';
if(s.find(kg, l) == string::npos){
// 如果没有找到
r = s.size() - 1;
cout << s.substr(l, r - l) << endl;
break;
} else {
// 找到了
r = s.find(kg, l);
cout << s.substr(l, r - l) << endl;
l = r + kg.size();
}
}
return 0;
}

View File

@@ -0,0 +1,23 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int a, b, c;
int main(){
cin >> a >> b >> c;
int cnt = 0;
for(int i = 1; i <= 8; i++){
for(int j = 1 ;j <= 16; j++){
cnt++;
if(cnt == a || cnt == b || cnt == c){
cout << (char)cnt;
}else {
cout << '*';
}
}
cout << endl;
}
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,32 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
double a, b, t;
int cnt = 3;
int main(){
cin >> a >> b >> t;
double curr = 0;
if(a > t){
cout << 1;
return 0;
} else if(b > t){
cout << 2;
return 0;
}
curr = sqrt(a * a + b * b); // µÚÈýÏî
while(curr <= t){
cnt++;
a = b;
b = curr;
curr = sqrt(a * a + b * b);
}
cout << cnt;
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,38 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
string s, a; // s
int dc = 0; // 当前是第几个单词
int zm = 0; // 当前是第几个字母
int main(){
getline(cin, s);
cin >> a;
string curr = "";
for(char c : s){
if(c == ' ' || c == '.'){
// 中断
// 出现一个单词
// if(curr.size() == 0){
// continue;
// }
dc++; // 单词数加一
cout << curr << " ";
if(curr == a){
cout << dc;
return 0;
}
curr = "";
} else {
curr += c;
zm++; // 字母数加一
}
}
cout << zm;
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,21 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
string str;
int main(){
// 两种读入
// cin >> str; // 局限:遇到空格就结束
getline(cin, str);
// cout << str;
// int len = str.size(); // 字符串.size(); 可以获得字符串的长度
for(char c : str){
cout << c << " ";
}
return 0;
}

Binary file not shown.

View File

@@ -6,18 +6,25 @@ int n;
int arr[100100];
int main(){
char c;
cin >> c;
string str = "abacad";
// // 截取子串 字符串.substr(pos, num) pos 想从什么位置开始截取 num截取多长
// string sub1 = str.substr(1, 2);
// // 截取子串 函数重载
// string sub = str.substr(1);
// 判断c是大写还是小写
if(c >= 'a' && c <= 'z'){
// 小写
c = c - 'a' + 'A';
} else {
c = c - 'A' + 'a';
// 查找
// 字符串.find('a');
int idx = -1;
while(1){
if(idx >= str.size()) break;
idx = str.find('a', idx + 1);
cout << idx << " ";
}
cout << c;
// if(str.find('h') == string::npos){
// cout << "没有出现过";
// }
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,29 @@
#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
int n;
int arr[100100];
int main(){
// 替换
string s = "abcdef";
// // 字符串.replace(pos, len, newstr);
// cout << s.replace(1, 2, "ab cd");
//
//// s.size() // 如果是空 false
//// s.empty() // 判断s是不是空的 true
//
// // 比较大小
// string s1 = "123", s2 = "A";
//
// cout << (s1 < s2); // 0
//
s.erase(1, 2);
cout << s;
return 0;
}

Binary file not shown.

View File

@@ -0,0 +1,31 @@
#include<bits/stdc++.h>
using namespace std;
int k,x, zm;
string s,fi,w="";
int main() {
getline(cin,s);
cin >> fi;
int m=s.size();
for(int i=0; i<m; i++) {
s[i];
if(isphla(s[i])){
}
if(s[i]==' '||s[i]=='.') {
// 判断w是不是空
if(w != "") {
k++;
if(w==fi) {
cout <<k;
return 0;
}
w="";
}
} else w+=s[i];
}
cout << zm;
return 0;
}

Binary file not shown.