尝试在数组中查找值时出现错误

def linear_search(arr, target):
    try:
        for i in range(len(arr)):
            if arr[i] == target:
                return i  # 找到目标值，返回索引
        return -1  # 未找到目标值
    except IndexError:
        print("索引越界错误")
        return -1

def binary_search(arr, target):
    low, high = 0, len(arr) - 1
    while low <= high:
        mid = (low + high) // 2
        if arr[mid] == target:
            return mid
        elif arr[mid] < target:
            low = mid + 1
        else:
            high = mid - 1
    return -1  # 未找到目标值

# 示例用法
arr = [1, 2, 3, 4, 5]
target = 3

index_linear = linear_search(arr, target)
print(f"线性查找结果: {index_linear}")

index_binary = binary_search(sorted(arr), target)  # 注意二分查找要求数组有序
print(f"二分查找结果: {index_binary}")