Count frequency of elements using dictionary Dry Run in PYTHON

Count frequency of elements using dictionary is an interactive PYTHON dry run visualizer from the Dict 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.

Count frequency of elements using dictionary Program Code

# Count frequency of elements in a list
numbers = [1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 1, 2, 3]
print("List:", numbers)

# Method 1: Using dictionary
freq = {}
for num in numbers:
    if num in freq:
        freq[num] += 1
    else:
        freq[num] = 1

print("Frequency dictionary:", freq)

# Method 2: Using get() method
freq2 = {}
for num in numbers:
    freq2[num] = freq2.get(num, 0) + 1
print("Using get():", freq2)

# Display nicely
print("\nElement frequencies:")
for key, value in sorted(freq.items()):
    print(f"  {key}: {value} time(s)")

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