Count occurrences of element Dry Run in PYTHON

Count occurrences of element is an interactive PYTHON dry run visualizer from the Recursion 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 occurrences of element Program Code

def count_occurrences(arr, target, idx=0):
    if idx == len(arr):
        return 0
    count_from_rest = count_occurrences(arr, target, idx+1)
    return 1 + count_from_rest if arr[idx] == target else count_from_rest

arr = [8, 3, 8, 3, 9, 8, 2]
target = 8
cnt = count_occurrences(arr, target)
print(f"{target} appears {cnt} times")

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