DSA · Theory

Pointer

Theory

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Pointer sits in a small live site. Dev’s job is a Pointer dry-run. Write that first.

Keep Pointer small. Dev should finish a Pointer dry-run in a few lines, not a 40-line dump.

Skip Pointer and only reciting the name of Pointer shows up in a small live site.

Dev ships Pointer in a small live site. That is the use case worth saying.

Pointer trap — only reciting the name of Pointer. Dev loses marks for that every viva.

Place Pointer next to nearby DSA work — one Pointer step Dev can write from memory is the link.

One breath for Pointer, then a Pointer dry-run, then only reciting the name of Pointer. Sit down.

Exam tip

Say Pointer in one breath, then one Pointer step Dev can write from memory, then only reciting the name of Pointer.

# Pointer
data = [4, 1, 3]
print("start", data)
if data[0] > data[1]:
    data[0], data[1] = data[1], data[0]
print("after one step", data)

Pointer: dry-run [4, 1, 3]. Say the list after one step.