Bob has an array of n integers. Output the number of distinct values in the array . Input The first input line has an integer n: the number of values. The second line has n integers x1,x2,…,xn. Output Print one integers: the number of distinct values. Constraints 1≤n≤2⋅10*5 1≤xi≤10*9
时间: 2024-03-12 20:43:22 浏览: 21
To solve this problem, we can use a set to keep track of all the distinct values in the array. We can iterate through the array and add each element to the set. At the end, the size of the set will give us the number of distinct values.
Here's the Python code to solve the problem:
```
n = int(input())
arr = list(map(int, input().split()))
distinct_values = set()
for i in range(n):
distinct_values.add(arr[i])
print(len(distinct_values))
```
This code reads in the input, creates an empty set called `distinct_values`, and then iterates through the array `arr`, adding each element to the set. Finally, it prints the size of the set using the `len()` function.
相关问题
Bob has an array of � n integers. Output the number of distinct values in the array . Input The first input line has an integer � n: the number of values. The second line has � n integers � 1 , � 2 , … , � � x 1 ,x 2 ,…,x n . Output Print one integers: the number of distinct values. Constraints 1 ≤ � ≤ 2 ⋅ 1 0 5 1≤n≤2⋅10 5 1 ≤ � � ≤ 1 0 9 1≤x i ≤10 9
This is a simple problem that can be solved using a hash set. You can iterate through the array and add each element to the hash set. After iterating through the entire array, the size of the hash set will give you the number of distinct values in the array. Here's some sample code in Python:
```
n = int(input())
arr = list(map(int, input().split()))
distinct = set()
for x in arr:
distinct.add(x)
print(len(distinct))
```
This code reads in the input, iterates through the array, adds each element to the hash set, and then prints out the size of the hash set.
Given a non-empty array of integers, return the result of multiplying the values together in order
Sure, I can help you with that! Here's a Python function that takes in an array of integers and returns the result of multiplying the values together in order:
```python
def multiply_values(arr):
result = 1
for num in arr:
result *= num
return result
```
You can call this function with an array of integers like this:
```python
my_array = [2, 3, 4, 5]
print(multiply_values(my_array)) # Output: 120 (which is the result of 2 * 3 * 4 * 5)
```
Let me know if you have any other questions!