# Python Exercises: Sum of missing numbers of a list of integers

## Python List: Exercise - 278 with Solution

Write a Python program to sum of missing numbers of a given list of integers.

**Sample Data:**

([0, 3, 4, 7, 9]) -> 22

([44, 45, 48]) -> 93

([-7, -5, -4, 0]) -> -12

**Sample Solution-1:**

**Python Code:**

```
def test(nums):
max_num = max(nums)
min_num = min(nums)
return (max_num+min_num)*(max_num-min_num+1)//2 - sum(nums)
nums = [0, 3, 4, 7, 9]
print("Original list:")
print(nums)
print("Sum of missing numbers of the said list of integers:")
print(test(nums))
nums = [44, 45, 48]
print("Original list:")
print(nums)
print("Sum of missing numbers of the said list of integers:")
print(test(nums))
nums = [-7, -5, -4, 0]
print("Original list:")
print(nums)
print("Sum of missing numbers of the said list of integers:")
print(test(nums))
```

Sample Output:

Original list: [0, 3, 4, 7, 9] Sum of missing numbers of the said list of integers: 22 Original list: [44, 45, 48] Sum of missing numbers of the said list of integers: 93 Original list: [-7, -5, -4, 0] Sum of missing numbers of the said list of integers: -12

**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:**

```
def test(nums):
max_num = max(nums)
min_num = min(nums)
return sum(range(min_num, max_num+1))-sum(nums)
nums = [0, 3, 4, 7, 9]
print("Original list:")
print(nums)
print("Sum of missing numbers of the said list of integers:")
print(test(nums))
nums = [44, 45, 48]
print("Original list:")
print(nums)
print("Sum of missing numbers of the said list of integers:")
print(test(nums))
nums = [-7, -5, -4, 0]
print("Original list:")
print(nums)
print("Sum of missing numbers of the said list of integers:")
print(test(nums))
```

Sample Output:

Original list: [0, 3, 4, 7, 9] Sum of missing numbers of the said list of integers: 22 Original list: [44, 45, 48] Sum of missing numbers of the said list of integers: 93 Original list: [-7, -5, -4, 0] Sum of missing numbers of the said list of integers: -12

**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 Python Exercise:** Largest, lowest gap between sorted values of a list.

**Next Python Exercise:** Check if each number is prime in a list of numbers.

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