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<head><title>array 3 pointers</title>
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<h2>Yanzhan's solution for "array 3 pointers"</h2>
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<li>Hi, I'm Yanzhan. For more algothmic problems, visit my Youtube Channel <a href="https://www.youtube.com/channel/UCDkz-__gl3frqLexukpG0DA?view_as=subscriber" target=_blank>[Yanzhan Yang's Youtube Channel]</a> or my Twitter Account <a href="https://twitter.com/YangYanzhan" target=_blank>[Yanzhan Yang's Twitter]</a> or my GitHub HomePage <a href="https://github.com/yangyanzhan/code-camp" target=_blank>[Yanzhan Yang's GitHub Project]</a> .</li>
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<h3>
solution:
</h3>
<pre class="yanzhan-hidden"><code class="c++">int Solution::minimize(const vector<int> &A, const vector<int> &B,
const vector<int> &C) {
int i = 0, j = 0, k = 0, n1 = A.size(), n2 = B.size(), n3 = C.size(),
best = INT_MAX;
while (i < n1 && j < n2 && k < n3) {
int a = A[i], b = B[j], c = C[k];
int bottom = min(a, min(b, c));
int top = max(a, max(b, c));
int diff = top - bottom;
if (diff == 0) {
return 0;
}
best = min(best, diff);
if (a == bottom) {
i++;
} else if (b == bottom) {
j++;
} else {
k++;
}
}
return best;
}
</code></pre>
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