# Python: Find the string consisting of all the words whose lengths are prime numbers

## Python Programming Puzzles: Exercise-64 with Solution

Write a Python program to find the string consisting of all the words whose lengths are prime numbers.

Input: The quick brown fox jumps over the lazy dog. Output: The quick brown fox jumps the Input: Omicron Effect: Foreign Flights Won't Resume On Dec 15, Decision Later. Output: Omicron Effect: Foreign Flights Won't On Dec 15,

**Visual Presentation:**

**Sample Solution:**

**Python Code:**

```
# License: https://bit.ly/3oLErEI
def test(strs):
# Join words whose lengths are prime numbers using list comprehension
return " ".join(strs for strs in strs.split() if is_prime(len(strs)))
def is_prime(n):
# Check if a number is prime
return n > 1 and all(n % j for j in range(2, int(n ** 0.5) + 1))
# Example 1
strs1 = "The quick brown fox jumps over the lazy dog."
print("Original list of words:")
print(strs1)
print("Words whose lengths are prime numbers in the said string:")
print(test(strs1))
# Example 2
strs2 = "Omicron Effect: Foreign Flights Won't Resume On Dec 15, Decision Later."
print("\nOriginal list of words:")
print(strs2)
print("Words whose lengths are prime numbers in the said string:")
print(test(strs2))
```

Sample Output:

Original list of numbers: The quick brown fox jumps over the lazy dog. Words whose lengths are prime numbers in the said string: The quick brown fox jumps the Original list of numbers: Omicron Effect: Foreign Flights Won't Resume On Dec 15, Decision Later. Words whose lengths are prime numbers in the said string: Omicron Effect: Foreign Flights Won't On Dec 15,

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