Find second smallest number Dry Run in PYTHON

Find second smallest number is an interactive PYTHON dry run visualizer from the Lists programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Find second smallest number Program Code

# Find second smallest element
numbers = [45, 78, 23, 89, 12, 56, 91, 34]
print("List:", numbers)

# Method 1: Using sorting
sorted_unique = sorted(set(numbers))
if len(sorted_unique) >= 2:
    print(f"Second smallest (sorting): {sorted_unique[1]}")

# Method 2: Single pass
first = second = float('inf')
for num in numbers:
    if num < first:
        second = first
        first = num
    elif num < second and num != first:
        second = num

print(f"Second smallest (single pass): {second}")

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