第1行输出按序号查找的结果,若查找成功: 输出第i个元素的值,若查找失败: 输出以下提示:The value of 'i' is not in the range [1,n]. 第2行输出按值查找的结果,若查找成功: 输出其值等于x的元素在表中的位置,若查找失败: 输出0。
时间: 2024-10-29 09:24:20 浏览: 32
这是一个程序设计中的场景,通常出现在数据结构如数组或列表的操作中。以下是描述的过程:
首先,你需要编写一段代码来实现顺序查找(线性查找),这是一种简单的查找算法,它从数组的第一个元素开始逐个比较,直到找到目标值或遍历完整个数组。如果找到了第`i`个元素并且它的值等于给定的`x`,那么输出这个元素的值;如果没有找到,则检查`i`是否在数组的索引范围[1, n]内,如果不是,就输出提示"The value of 'i' is not in the range [1,n]"。
接着,对于按值查找,你需要再次遍历整个数组,寻找第一个等于`x`的元素。一旦找到,返回该元素在数组中的索引;如果没有找到`x`,则返回0,表示`x`不在数组中。
下面是伪代码示例:
```python
def sequential_search(array, i, x):
if i <= len(array) and i > 0:
if array[i - 1] == x:
return array[i - 1]
else:
print("The value of 'i' is not in the range [1,n]")
else:
print("The value of 'i' is not in the range [1,n]")
def value_search(array, x):
for index, element in enumerate(array):
if element == x:
return index + 1 # 返回索引加1,因为索引是从0开始的
return 0
# 示例
n = len(array)
value_to_find = x
i = 5 # 指定查找的序号
output_sequential = sequential_search(array, i, x)
output_value = value_search(array, x)
print(f"Sequential Search: {output_sequential}")
print(f"Value Search: {output_value}")
```
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