检查前一个值小于x值的谓词；Python

def is_previous_less_than_x(sequence, x):
    for i in range(1, len(sequence)):
        if sequence[i - 1] >= x:
            return False
    return True

# 示例
sequence = [1, 2, 3, 4]
x = 3
print(is_previous_less_than_x(sequence, x))  # 输出：True

def is_previous_less_than_x(sequence, x):
    return all(sequence[i - 1] < x for i in range(1, len(sequence)))

# 示例
sequence = [1, 2, 3, 4]
x = 3
print(is_previous_less_than_x(sequence, x))  # 输出：True

import numpy as np

def is_previous_less_than_x(sequence, x):
    arr = np.array(sequence)
    return np.all(arr[:-1] < x)

# 示例
sequence = [1, 2, 3, 4]
x = 3
print(is_previous_less_than_x(sequence, x))  # 输出：True

def is_previous_less_than_x(sequence, x):
    if len(sequence) < 2:
        return True  # 或者根据实际情况返回False
    return all(sequence[i - 1] < x for i in range(1, len(sequence)))