Robotics & Artificial Intelligence
What would be the output of following code snippet:
a = [1, 2, 3, 4, 5]
b = [2, 2, 2, 2, 2]
for i in a:
for j in b:
k=i+j
print(k)
Answer
Output:
3
4
5
6
7
Explanation
- The outer
forloop iterates through each element of lista. - For each value of
i, the innerforloop iterates through all elements of listb. - Inside the inner loop, the value of
kis updated ask = i + j. Since all elements of listbare 2, andkis overwritten in every inner iteration, after the inner loop finishes,kholds the valuei + 2. - The
print(k)statement is outside the inner loop but inside the outer loop, so it prints the final value ofkfor eachi.
Iterations:
Outer Loop (i) | Inner Loop (j) values | Calculation (k = i + j) | Value Printed |
|---|---|---|---|
| 1 | 2, 2, 2, 2, 2 | 3, 3, 3, 3, 3 | 3 |
| 2 | 2, 2, 2, 2, 2 | 4, 4, 4, 4, 4 | 4 |
| 3 | 2, 2, 2, 2, 2 | 5, 5, 5, 5, 5 | 5 |
| 4 | 2, 2, 2, 2, 2 | 6, 6, 6, 6, 6 | 6 |
| 5 | 2, 2, 2, 2, 2 | 7, 7, 7, 7, 7 | 7 |
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