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    React · JavaScript · TypeScript · Node.js · DSA

    Practice coding interviews with AI feedback.
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    codstak / sum-two-numbersDSA challenge
    DSA5–10 min

    Challenge 03

    Sum of two numbers

    Practice a focused algorithm problem, verify edge cases, and review the quality of your approach.

    Define the function contract
    Handle positive and negative values
    Return the result without extra output
    solution.pytests

    def sum_two_numbers(a, b):

    return a + b

    # Try a few inputs

    result = sum_two_numbers(4, 7)

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    Why does my state update show the old value?
    React schedules state updates. Instead of reading the value immediately after setting it, derive what you need during render—or use the callback form when the next value depends on the previous one.
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