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        <span style="margin-left: 8px; font-weight: bold; color: #38bdf8;">⚙️ C++ Code Challenges - Skillance C++20</span>
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<span class="comment">// Skrip C++20 - Skillance Academy Indonesia</span>
#include &lt;iostream&gt;
#include &lt;vector&gt;
#include &lt;unordered_map&gt;

// Problem: Two Sum O(n)
std::pair&lt;int, int&gt; twoSum(const std::vector&lt;int&gt;&amp; nums, int target) {
    std::unordered_map&lt;int, int&gt; mapAngka;
    for (int i = 0; i &lt; (int)nums.size(); ++i) {
        int sisa = target - nums[i];
        if (mapAngka.count(sisa)) {
            return {mapAngka[sisa], i};
        }
        mapAngka[nums[i]] = i;
    }
    return {-1, -1};
}

int main() {
    std::vector&lt;int&gt; angka = {2, 7, 11, 15};
    int target = 9;
    auto [idx1, idx2] = twoSum(angka, target);

    std::cout &lt;&lt; "Two Sum Solusi Hash Map:\n";
    std::cout &lt;&lt; "Target: " &lt;&lt; target &lt;&lt; " ditemukan di indeks: [" &lt;&lt; idx1 &lt;&lt; ", " &lt;&lt; idx2 &lt;&lt; "]\n";
    return 0;
}
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        <div style="color: #64748b; margin-bottom: 6px;">[Terminal Output] &gt; g++ -std=c++20 main.cpp -o main &amp;&amp; ./main</div>
        <div style="color: #4ade80; font-weight: bold;">Two Sum Solusi Hash Map:<br>Target: 9 ditemukan di indeks: [0, 1]</div>
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