added tasks

TaskC41/run.py

@@ -0,0 +1,13 @@
+def is_valid_age(age):
+    try:
+        number, unit = age.split(" ")
+        if unit == "lat" and number.isdigit():
+            return 0 < int(number) <= 123
+        return False
+    except ValueError:
+        return False
+
+with open("test.in", "r", encoding="utf-8") as file:
+    for line in file:
+        line = line.strip()
+        print("yes" if is_valid_age(line) else "no")

TaskC48/run.py

@@ -0,0 +1,15 @@
+def is_alternating_case(string):
+    if len(string) < 2:
+        return False
+    for i in range(len(string) - 1):
+        if string[i].isalpha() and string[i + 1].isalpha():
+            if string[i].islower() == string[i + 1].islower():
+                return False
+        else:
+            return False
+    return True
+
+with open("test.in", "r", encoding="utf-8") as file:
+    for line in file:
+        line = line.strip()
+        print("yes" if is_alternating_case(line) else "no")

TaskD00/run.py

@@ -0,0 +1,16 @@
+def substitute_digits_to_chars(string):
+    new_string = ""
+    i = 0
+    while i < len(string):
+        if i + 4 <= len(string) and string[i:i+4].isdigit():  
+            new_string += ''.join(chr(ord('a') + int(digit)) for digit in string[i:i+4])
+            i += 4
+        else:
+            new_string += string[i]
+            i += 1
+    return new_string
+
+with open("simple.in", "r", encoding="utf-8") as file:
+    for line in file:
+        line = line.strip()
+        print(substitute_digits_to_chars(line))

TaskD01/run.py

@@ -0,0 +1,18 @@
+def swap_case(line):
+    words = line.split()
+    res = []
+    for word in words:
+        lower = any(c.islower() for c in word)
+        upper = any(c.isupper() for c in word)
+
+        if lower and upper:
+            res.append(word.swapcase())
+        else:
+            res.append(word)
+
+    return " ".join(res)
+
+with open("simple.in", "r", encoding="utf-8") as file:
+    for line in file:
+        line = line.strip()
+        print(swap_case(line))

TaskD02/run.py

@@ -0,0 +1,11 @@
+def count_chars(line):
+    lower = sum(c.islower() for c in line)
+    upper = sum(c.isupper() for c in line)
+    digit = sum(c.isdigit() for c in line)
+    other = len(line) - (lower + upper + digit)
+    return f"{lower} {upper} {digit} {other}"
+
+with open("simple.in", "r", encoding="utf-8") as file:
+    for line in file:
+        line = line.strip()
+        print(count_chars(line))

TaskD03/run.py

@@ -0,0 +1,10 @@
+def count_words(line):
+    words = line.split()
+    lower = sum(1 for word in words if word and word[0].islower())
+    upper = sum(1 for word in words if word and word[0].isupper())  
+    return f"{lower} {upper}"
+
+with open("simple.in", "r", encoding="utf-8") as file:
+    for line in file:
+        line = line.strip()
+        print(count_words(line))

TaskD04/run.py

@@ -0,0 +1,18 @@
+def remove_second_number(line):
+    words = line.split()
+    count = 0
+    result = []
+
+    for word in words:
+        if word.isdigit():
+            count += 1
+            if count == 2:
+                continue
+        result.append(word)
+
+    return " ".join(result)
+with open("simple.in", "r", encoding="utf-8") as file:
+    for line in file:
+        line = line.strip()
+        print(remove_second_number(line))
+