<div class="_1l1MA">Consider the indices we will increment separately.</div>

<div class="_1l1MA">We can maintain two pointers: pointer <code>i</code> for <code>str1</code> and pointer <code>j</code> for <code>str2</code>, while ensuring they remain within the bounds of the strings.</div>

<div class="_1l1MA">If both <code>str1[i]</code> and <code>str2[j]</code> match, or if incrementing <code>str1[i]</code> matches <code>str2[j]</code>, we increase both pointers; otherwise, we increment only pointer <code>i</code>.</div>

<div class="_1l1MA">It is possible to make <code>str2</code> a subsequence of <code>str1</code> if <code>j</code> is at the end of <code>str2</code>, after we can no longer find a match.</div>