Python:
class book:
def __init__(self, author, name, date):
self.author = author
self.name = name
self.date = date
def print(self):
print(self.name, self.author, self.date)
book1 = book("абоба", "математика 8 класс", 1951)
book2 = book("абоба", "информатика 8 класс", 1992)
book3 = book("абоба", "математика 10 класс", 1991)
book4 = book("абоба1", "математика 10 класс", 1994)
book5 = book("абоба1", "информатика 10 класс", 1955)
book6 = book("абоба1", "информатика 11 класс", 1993)
book7 = book("абоба", "физика 8 класс", 1952)
book8 = book("абоба", "информатика 8 класс", 1871)
book9 = book("абоба1", "физика 8 класс", 1951)
book10 = book("абоба1", "физика 8 класс", 1971)
library = [book1, book2, book3, book4, book5, book6, book7, book8, book9, book10]
# a
author = "абоба" # автор, книги которого ищем
print("а)")
for i in range(len(library)):
if library[i].author == author and library[i].date >= 1960:
print(library[i].name)
# б
print("б)")
for i in range(len(library)):
for k in library[i].name.split():
if k == 'информатика':
library[i].print()
# в
print("в)")
for i in range(len(library) - 1):
for j in range(i + 1, len(library)):
if library[i].author == library[j].author and library[i].name == library[j].name:
library[i].print()
library[j].print()
var n, x, L, F, k, kint, max:integer;
begin
kint := 0;
max := 0;
for n := 2095 to 19402 do begin
x := n;
k := 0;
while x > 0 do begin
k := k + 1;
if k = 1 then
L := x mod 10;
F := x mod 10;
x := x div 10;
end;
if (F > L)and(n mod 10 = 1)and((n div 10)mod 10 = 2)then begin
kint := kint + 1;
if n > max then
max := n;
end;
end;
writeln(kint,' ',max);
end.
Объяснение:
F - первая цифра числа
L - последняя(Слева направо)
