Python 集計

scores = [10, 20, 30, 20, 40]

print(len(scores))

print(min(scores))

print(max(scores))

print(sum(scores))

print(scores.index(20))

print(20 in scores)
print(100 in scores)

python リストから要素を削除

scores = [10, 20, 30, 20, 40]

scores.clear()

scores.remove(20)

popped_item = scores.pop()

del scores[2]

print(scores)

print(popped_item)

Python extend,insert

scores = [10, 20, 30, 20, 40]

scores.append(60)

scores.extend([70, 80])

scores = scores + [70, 80]

scores += [70, 80]

scores = scores * 3

scores *= 3

scores.insert(1, 15)

print(scores)

C++ 静的変数

include<iostream>

using namespace std;
int f() {
static int x = 0;
++x;
return x;
}
int main()
{
cout << f() << endl;
cout << f() << endl;
cout << f() << endl;
}

C++ ローカル変数

include<iostream>

using namespace std;

int f() {
int x = 0;
++x;
return x;
}
int main()
{
cout << f() << endl;
cout << f() << endl;
cout << f() << endl;
}

Python append

scores = [10, 20, 30, 20, 40]
scores.append(60) #メソッド

append(scores, 60)

print(scores)

C++ 約数を数える関数

include<iostream>

using namespace std;
int main()
{
int n, divisors;

n = 10;
divisors = 0;
for (int i = 1; i <= n; ++i) {
    if (n % i == 0) ++divisors;
}
cout << n << "の約数の数:" << divisors << endl;

}

C++ return

include<iostream>

using namespace std;
int add1(int x) {
return x + 1;
}
int main()
{
int result = add1(1);
cout << result << endl;
}

Python インデックス

scores = [10,20,30,20,40]
scores[1] = 100

print(scores)

Java 変数

package sample;

public class Hello {

public static void main(String[] args) {

int old, height;

old = 20;

height = 184;

System.out.println(“年齢:” + old);

System.out.println(“慎重:” + height);

}