To find the smallest and second smallest elements in an array of integers, follow these steps:

1. Initialize two variables, `smallest` and `second_smallest`, with values that are greater than any possible element in the array. For example, you can set `smallest` to infinity and `second_smallest` to infinity + 1.

2. Iterate through each element in the array.

3. Compare the current element with the value of `smallest`. If the current element is smaller than `smallest`, update `smallest` with the value of the current element.

4. If the current element is not smaller than `smallest` but smaller than `second_smallest`, update `second_smallest` with the value of the current element.

5. After iterating through all the elements, check if `second_smallest` is still greater than `smallest`. If it is, it means that there is no second smallest element in the array. In this case, print -1.

6. Otherwise, print the values of `smallest` and `second_smallest`.

Here is an example implementation in Python:

```python
def find_smallest_and_second_smallest(arr):
smallest = float('inf')
second_smallest = float('inf') + 1

for num in arr:
if num

Question

To find the smallest and second smallest elements in an array of integers, follow these steps:

1. Initialize two variables, `smallest` and `second_smallest`, with values that are greater than any possible element in the array. For example, you can set `smallest` to infinity and `second_smallest` to infinity + 1.

2. Iterate through each element in the array.

3. Compare the current element with the value of `smallest`. If the current element is smaller than `smallest`, update `smallest` with the value of the current element.

4. If the current element is not smaller than `smallest` but smaller than `second_smallest`, update `second_smallest` with the value of the current element.

5. After iterating through all the elements, check if `second_smallest` is still greater than `smallest`. If it is, it means that there is no second smallest element in the array. In this case, print -1.

6. Otherwise, print the values of `smallest` and `second_smallest`.

Here is an example implementation in Python:

```python
def find_smallest_and_second_smallest(arr):
    smallest = float('inf')
    second_smallest = float('inf') + 1

for num in arr:
        if num < smallest:
            second_smallest = smallest
            smallest = num
        elif num < second_smallest and num != smallest:
            second_smallest = num

if second_smallest == float('inf') + 1:
        print(-1)
    else:
        print(smallest, second_smallest)
```

You can call this function with your array as an argument to find the smallest and second smallest elements.

Knowee AI · Accepted Answer