DSA · Theory

Find precedence characters form a given sorted dictionary

Theory

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Find precedence characters form a given sorted dictionary

Find precedence characters form a given sorted dictionary is a DSA topic. In plain words you use it for names A→Z in the roll list. Don’t start with a slogan — start with that picture.

Smallest example: n log n vs n². Type it, run it, and say what you see. If you can do that from memory, you know Find precedence characters form a given sorted dictionary.

From the example next to this theory — Find precedence characters form a given sorted dictionary: dry-run [4, 1, 3].

Trap — unstable sort when equal keys matter. Fix that before you talk about advanced DSA.

Viva — what is Find precedence characters form a given sorted dictionary? Then show n log n vs n². Then name the trap.

Exam tip

What is Find precedence characters form a given sorted dictionary? Show this: n log n vs n². Trap: unstable sort when equal keys matter.

Example

# Find precedence characters form a given sorted dictionary
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)

Find precedence characters form a given sorted dictionary: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefFind precedence characters form a given sorted dictionary — names A→Z in the roll list.
Rulen log n vs n²
Trapunstable sort when equal keys matter
Usethe roll list

DSA · Theory

Find precedence characters form a given sorted dictionary

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Theory

232/810

Find precedence characters form a given sorted dictionary

Find precedence characters form a given sorted dictionary is a DSA topic. In plain words you use it for names A→Z in the roll list. Don’t start with a slogan — start with that picture.

Smallest example: n log n vs n². Type it, run it, and say what you see. If you can do that from memory, you know Find precedence characters form a given sorted dictionary.

From the example next to this theory — Find precedence characters form a given sorted dictionary: dry-run [4, 1, 3].

Trap — unstable sort when equal keys matter. Fix that before you talk about advanced DSA.

Viva — what is Find precedence characters form a given sorted dictionary? Then show n log n vs n². Then name the trap.

Exam tip

What is Find precedence characters form a given sorted dictionary? Show this: n log n vs n². Trap: unstable sort when equal keys matter.

Example

# Find precedence characters form a given sorted dictionary
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)

Find precedence characters form a given sorted dictionary: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefFind precedence characters form a given sorted dictionary — names A→Z in the roll list.
Rulen log n vs n²
Trapunstable sort when equal keys matter
Usethe roll list

Find precedence characters form a given sorted dictionary

Example

Short notes

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Find precedence characters form a given sorted dictionary

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Find precedence characters form a given sorted dictionary

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