# Python: Find the largest k numbers

## Python Programming Puzzles: Exercise-36 with Solution

Write a Python program to find the largest k numbers from a given list of numbers.

Input: [1, 2, 3, 4, 5, 5, 3, 6, 2] Output: [6] Input: [1, 2, 3, 4, 5, 5, 3, 6, 2] Output: [6, 5] Input: [1, 2, 3, 4, 5, 5, 3, 6, 2] Output: [6, 5, 5] Input: [1, 2, 3, 4, 5, 5, 3, 6, 2] Output: [6, 5, 5, 4] Input: [1, 2, 3, 4, 5, 5, 3, 6, 2] Output: [6, 5, 5, 4, 3]

**Pictorial Presentation:**

**Sample Solution-1:**

**Python Code:**

```
#License: https://bit.ly/3oLErEI
def test(nums, k):
if k == 0:
return []
return sorted(nums, reverse=True)[:k]
nums = [1, 2, 3, 4, 5, 5, 3, 6, 2]
print("Original list of numbers:",nums)
k = 1
print("Largest", k, "numbers from the said list:")
print(test(nums, k))
k = 2
print("Largest", k, "numbers from the said list:")
print(test(nums, k))
k = 3
print("Largest", k, "numbers from the said list:")
print(test(nums, k))
k = 4
print("Largest", k, "numbers from the said list:")
print(test(nums, k))
k = 5
print("Largest", k, "numbers from the said list:")
print(test(nums, k))
```

Sample Output:

Original list of numbers: [1, 2, 3, 4, 5, 5, 3, 6, 2] Largest 1 numbers from the said list: [6] Largest 2 numbers from the said list: [6, 5] Largest 3 numbers from the said list: [6, 5, 5] Largest 4 numbers from the said list: [6, 5, 5, 4] Largest 5 numbers from the said list: [6, 5, 5, 4, 3]

**Flowchart:**

## Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

**Sample Solution-2:**

**Python Code:**

```
#License: https://bit.ly/3oLErEI
def test(nums, k):
if k == 0:
return []
elif k == len(nums):
return nums
else:
x = nums[0]
for n in nums:
if x < n:
x = n
result = [x]
largest = nums[:]
largest.remove(x)
while len(result) != k:
smallest = largest[0]
for n in largest:
if smallest < n:
smallest = n
result.append(smallest)
largest.remove(smallest)
return result
nums = [1, 2, 3, 4, 5, 5, 3, 6, 2]
print("Original list of numbers:",nums)
k = 1
print("Largest", k, "numbers from the said list:")
print(test(nums, k))
k = 2
print("Largest", k, "numbers from the said list:")
print(test(nums, k))
k = 3
print("Largest", k, "numbers from the said list:")
print(test(nums, k))
k = 4
print("Largest", k, "numbers from the said list:")
print(test(nums, k))
k = 5
print("Largest", k, "numbers from the said list:")
print(test(nums, k))
```

Sample Output:

Original list of numbers: [1, 2, 3, 4, 5, 5, 3, 6, 2] Largest 1 numbers from the said list: [6] Largest 2 numbers from the said list: [6, 5] Largest 3 numbers from the said list: [6, 5, 5] Largest 4 numbers from the said list: [6, 5, 5, 4] Largest 5 numbers from the said list: [6, 5, 5, 4, 3]

**Flowchart:**

## Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

**Python Code Editor :**

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**Previous:** Product of the odd digits in n, or 0 if there aren't any.

**Next:** Find the largest integer divisor of a number n that is less than n.

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## Python: Tips of the Day

**Clamps num within the inclusive range specified by the boundary values x and y:**

Example:

def tips_clamp_num(num,x,y): return max(min(num, max(x, y)), min(x, y)) print(tips_clamp_num(2, 4, 6)) print(tips_clamp_num(1, -1, -6))

Output:

4 -1

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