methods/lcb/function_code_sample/random_func_15.py

import random
import string

def generate_random_string(length):
    return ''.join(random.choice(string.ascii_lowercase) for _ in range(length))

def generate_operation(current_length, query_count, max_queries):
    operations = []
    
    # Choose operation type with weighted probabilities
    if query_count >= max_queries:
        # No more queries allowed
        op_type = random.choices(['R', 'I'], weights=[0.6, 0.4])[0]
    else:
        op_type = random.choices(['Q', 'R', 'I'], weights=[0.5, 0.3, 0.2])[0]
    
    if op_type == 'Q':
        x = random.randint(1, current_length)
        y = random.randint(1, current_length)
        operations.append(f"Q {x} {y}")
        return operations, current_length, query_count + 1
    
    elif op_type == 'R':
        x = random.randint(1, current_length)
        d = random.choice(string.ascii_lowercase)
        operations.append(f"R {x} {d}")
        return operations, current_length, query_count
    
    else:  # op_type == 'I'
        x = random.randint(0, current_length)
        d = random.choice(string.ascii_lowercase)
        operations.append(f"I {x} {d}")
        return operations, current_length + 1, query_count

def construct_inputs():
    inputs_list = []
    
    # Small test cases
    for _ in range(10):
        initial_length = random.randint(1, 20)
        initial_string = generate_random_string(initial_length)
        m = random.randint(1, 30)
        max_queries = min(m, 20)
        
        operations = []
        current_length = initial_length
        query_count = 0
        
        for _ in range(m):
            if current_length >= 100000:  # Prevent string from getting too long
                break
            ops, current_length, query_count = generate_operation(current_length, query_count, max_queries)
            operations.extend(ops)
        
        test_case = f"{initial_string}\n{len(operations)}\n" + "\n".join(operations)
        inputs_list.append(test_case)
    
    # Medium test cases
    for _ in range(10):
        initial_length = random.randint(50, 500)
        initial_string = generate_random_string(initial_length)
        m = random.randint(100, 1000)
        max_queries = min(m // 3, 100)
        
        operations = []
        current_length = initial_length
        query_count = 0
        
        for _ in range(m):
            if current_length >= 100000:
                break
            ops, current_length, query_count = generate_operation(current_length, query_count, max_queries)
            operations.extend(ops)
        
        test_case = f"{initial_string}\n{len(operations)}\n" + "\n".join(operations)
        inputs_list.append(test_case)
    
    # Large test cases
    for _ in range(10):
        initial_length = random.randint(1000, 10000)
        initial_string = generate_random_string(initial_length)
        m = random.randint(10000, 50000)
        max_queries = min(m // 10, 1000)
        
        operations = []
        current_length = initial_length
        query_count = 0
        
        for _ in range(m):
            if current_length >= 100000:
                break
            ops, current_length, query_count = generate_operation(current_length, query_count, max_queries)
            operations.extend(ops)
        
        test_case = f"{initial_string}\n{len(operations)}\n" + "\n".join(operations)
        inputs_list.append(test_case)
    
    # Edge cases
    # Single character string
    test_case = "a\n3\nQ 1 1\nR 1 b\nQ 1 1"
    inputs_list.append(test_case)
    
    # String with repeated characters
    test_case = "aaaa\n5\nQ 1 2\nQ 2 3\nI 2 b\nQ 1 3\nQ 3 5"
    inputs_list.append(test_case)
    
    # Maximum constraint test
    initial_string = generate_random_string(50000)
    operations = []
    current_length = 50000
    query_count = 0
    max_queries = 2000
    
    for _ in range(30000):
        if current_length >= 100000:
            break
        ops, current_length, query_count = generate_operation(current_length, query_count, max_queries)
        operations.extend(ops)
        if query_count >= max_queries and len(operations) > 20000:
            break
    
    test_case = f"{initial_string}\n{len(operations)}\n" + "\n".join(operations)
    inputs_list.append(test_case)
    
    return inputs_list