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CodingTest

Python / ASCII

August 13 2023

ASCII code (์ฑ—์ง€ํ”ผํ‹ฐํ•œํ…Œ ๋ฌผ์–ด๋ดค๋‹ค) ์•„์Šคํ‚ค ์ฝ”๋“œ๋Š” ์ปดํ“จํ„ฐ์™€ ํ†ต์‹  ์‹œ์Šคํ…œ์—์„œ ์‚ฌ์šฉ๋˜๋Š” ๋ฌธ์ž ์ธ์ฝ”๋”ฉ ๋ฐฉ์‹์ด๋‹ค. ์ด ์ฝ”๋“œ๋Š” ์ปดํ“จํ„ฐ๊ฐ€ ๋ฌธ์ž, ์ˆซ์ž, ๊ธฐํ˜ธ ๋“ฑ์„ ์ดํ•ดํ•˜๊ณ  ์ฒ˜๋ฆฌํ•  ์ˆ˜ ์žˆ๋„๋ก ํ•˜๊ธฐ ์œ„ํ•ด ์‚ฌ์šฉ๋œ๋‹ค. ์•„์Šคํ‚ค ์ฝ”๋“œ๋Š” 7๋น„ํŠธ๋กœ ์ด๋ฃจ์–ด์ง„ ์ฝ”๋“œ ์ฒด๊ณ„๋กœ์„œ, ์ด...

Coding Test / Python / lambda

January 13 2023

์ฝ”ํ…Œ ์ค€๋น„๋ฅผ ํ•œ์ฐธ์„ ์‰ฌ์—ˆ๋‹ค๊ฐ€ ๋‹ค์‹œ ์‹œ์ž‘ํ•˜๋ ค๋‹ˆ ์•„์ฃผ ๊ธฐ๋ณธ์ ์ธ ๊ฒƒ๋“ค์„ ์ „๋ถ€ ์žŠ์–ด๋ฒ„๋ ธ๋‹ค .. ์ž˜ ์ •๋ฆฌํ•ด์„œ ๋‘๊ณ ๋‘๊ณ  ๋ด์•ผ๊ฒ ๋‹ค . โšช๏ธ ํŠน์ • ์ธ๋ฑ์Šค ๊ฐ’์„ ๊ธฐ์ค€์œผ๋กœ ๋ฌธ์ž์—ด ๋ฆฌ์ŠคํŠธ ์ •๋ ฌํ•˜๊ธฐ answer = sorted(strings, key = lambda x: x[n])

[Python] input() vs. sys.stdin.readline()

October 04 2022

๐Ÿ”ตinput() parameter๋กœ prompt message๋ฅผ ๋ฐ›์„ ์ˆ˜ ์žˆ๋‹ค. -> prompt message๋ž€ ์˜ˆ๋ฅผ ๋“ค์–ด ์ž…๋ ฅ์„ ๋ฐ›์„ ๋•Œ "Input : "๊ณผ ๊ฐ™์€ ์•ˆ๋‚ด ๋ฌธ๊ตฌ๋ฅผ ๊ฐ€๋ฆฌํ‚จ๋‹ค. prompt message๋ฅผ ์ถœ๋ ฅํ•œ ๋’ค, ์‚ฌ์šฉ์ž์˜ ์ž…๋ ฅ์„ ๊ธฐ๋‹ค๋ฆฐ๋‹ค. ํ‚ค๋ณด...

BOJ / 1463 / 1๋กœ ๋งŒ๋“ค๊ธฐ / Python

April 27 2022

์ด์ „์— ํ’€์—ˆ๋˜ ๋ฌธ์ œ์ธ๋ฐ ๋ชป ํ’€์—ˆ๋‹ค. ๊ธฐ๋ก์„ ๋ณด๋‹ˆ ์ด์ „์—๋„ ๋ชป ํ’€์–ด์„œ ๊ฒฐ๊ตญ ๊ตฌ๊ธ€๋ง์œผ๋กœ ํ•ด๊ฒฐํ–ˆ๋˜ ๋ฌธ์ œ์˜€๋‹ค. ์—ญ์‹œ๋‚˜ ๋จธ๋ฆฌ์— ์•„๋ฌด๊ฒƒ๋„ ์•ˆ ๋‚จ์•˜๋˜ ๊ฑฐ๋‹ค .. !

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AI

[๋ฐ‘์‹œ๋”ฅ] 3์žฅ ์‹ ๊ฒฝ๋ง

October 14 2023

DeepLearningFromScratch CHAPTER3 Neural Network ํผ์…‰ํŠธ๋ก ์—์„œ ์‹ ๊ฒฝ๋ง์œผ๋กœ ์ ์ ˆํ•œ ๊ฐ€์ค‘์น˜ ๊ฐ’์„ ์‚ฌ๋žŒ์ด ์ˆ˜๋™์œผ๋กœ ์„ค์ •ํ•ด์•ผ ํ•˜๋Š” ํผ์…‰ํŠธ๋ก ๊ณผ ๋‹ฌ๋ฆฌ ์‹ ๊ฒฝ๋ง์€ ๊ฐ€์ค‘์น˜ ๋งค๊ฐœ๋ณ€์ˆ˜์˜ ์ ์ ˆํ•œ ๊ฐ’์„ ๋ฐ์ดํ„ฐ๋กœ๋ถ€ํ„ฐ ์ž๋™์œผ๋กœ ํ•™์Šตํ•œ๋‹ค. ํผ์…‰ํŠธ๋ก ์—์„œ ์‹ ๊ฒฝ๋ง์œผ๋กœ ๋„˜...

CNN

August 09 2023

0. Convolutional Neural Network ์ด๋ฏธ์ง€ ์ธ์‹๊ณผ ์Œ์„ฑ ์ธ์‹ ๋“ฑ ๋‹ค์–‘ํ•œ ๊ณณ์—์„œ ์‚ฌ์šฉ๋œ๋‹ค. CNN์˜ ๋„คํŠธ์›Œํฌ๋Š” ํ•ฉ์„ฑ๊ณฑ ๊ณ„์ธต convolutional layer ์™€ ํ’€๋ง ๊ณ„์ธต pooling layer ๋ฅผ ํฌํ•จํ•œ๋‹ค.

Weights

August 03 2023

๊ฐ€์ค‘์น˜์˜ ์ดˆ๊นƒ๊ฐ’ ๊ฐ€์ค‘์น˜ ์ดˆ๊นƒ๊ฐ’์„ ์–ด๋–ป๊ฒŒ ์„ค์ •ํ•˜๋А๋ƒ๊ฐ€ ์‹ ๊ฒฝ๋ง ํ•™์Šต์„ ์ขŒ์šฐํ•  ์ˆ˜ ์žˆ์„ ๋งŒํผ ์ค‘์š”ํ•˜๋‹ค.

optimizer

August 03 2023

์‹ ๊ฒฝ๋ง ํ•™์Šต ์ด๋ž€ ์‹ ๊ฒฝ๋ง์—๋Š” ๊ฐ€์ค‘์น˜์™€ ํŽธํ–ฅ์ด ์žˆ๋‹ค. ์ด ๊ฐ€์ค‘์น˜์™€ ํŽธํ–ฅ์„ ์†์‹ค ํ•จ์ˆ˜์˜ ๊ฐ’์„ ์ตœ๋Œ€ํ•œ ๋‚ฎ์ถ”๋Š” ๋ฐฉํ–ฅ์œผ๋กœ ์กฐ์ •ํ•˜๋Š” ๊ณผ์ •์„ ํ•™์Šต ์ด๋ผ๊ณ  ํ•œ๋‹ค. ์ด๋•Œ ์ตœ์ ์˜ ๋งค๊ฐœ๋ณ€์ˆ˜ ๊ฐ’์„ ์ฐพ๋Š” ๊ฒƒ์„ ์ตœ์ ํ™” optimization ๋ผ ํ•œ๋‹ค. Stochastic Gradient Des...

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AWS

[AWS] ALB์™€ NLB์˜ ์ฐจ์ด

February 06 2023

๐Ÿ’ญ ๋งค๋ฒˆ ํ—ท๊ฐˆ๋ ธ๋˜ ALB์™€ NLB์˜ ์ฐจ์ด์— ๋Œ€ํ•ด ์•„์ฃผ ์กฐ๊ธˆ ๊ฐœ๋…์ด ์žกํ˜”๋‹ค. ๋˜ ์žŠ์–ด๋ฒ„๋ฆฌ๊ธฐ ์ „์— ! ์ •๋ฆฌ๋ฅผ ์ข€ ํ•˜๋ ค๊ณ  ํ•œ๋‹ค. ์•„์ง ์™„๋ฒฝํžˆ ๋‹ค ๊ณต๋ถ€ํ•œ ๊ฒƒ์€ ์•„๋‹ˆ๋ผ์„œ ๊ณ„์† ์กฐ๊ธˆ์”ฉ ์ˆ˜์ •ํ•ด์„œ ๋‚ด์šฉ์„ ์ฑ„์›Œ๋‚˜๊ฐˆ ์ƒ๊ฐ์ด๋‹ค.

[AWS] SSH๋กœ EC2 ์ธ์Šคํ„ด์Šค ์ ‘์† & ์›น ์„œ๋น„์Šค ์„ค์น˜

January 18 2023

# ์ฃผ์˜ ! ์ด๋•Œ ํ‚คํŒŒ์ผ์ด ์ €์žฅ๋œ ์œ„์น˜๋กœ ์šฐ์„  ์ด๋™ํ•ด์•ผํ•œ๋‹ค. # ํ‚ค ํŒŒ์ผ์— ๋Œ€ํ•ด์„œ ์†Œ์œ ์ž๋งŒ ๋ณผ ์ˆ˜ ์žˆ๋„๋ก ๊ถŒํ•œ์„ ๋ณ€๊ฒฝํ•œ๋‹ค. $ chmod 400 (ํ‚ค ํŒŒ์ผ).pem

[PuTTY] Error : No supported authentication methods available

April 29 2022

PuTTY์—์„œ Host Name์— EC2 ์ธ์Šคํ„ด์Šค์˜ ํผ๋ธ”๋ฆญ IPv4 ์ฃผ์†Œ๊ฐ€ ์•„๋‹Œ, ํผ๋ธ”๋ฆญ IPv4 DNS๋ฅผ ๋„ฃ์–ด์ค€๋‹ค. ๊ทธ๋ฆฌ๊ณ  ์™ผ์ชฝ ํƒญ์—์„œ Connection > SSH > Auth > Private Key file for authentication์—์„œ Browse๋ฅผ...

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Algorithm

Heap / Python

August 16 2023

โœ… Heap ํž™์€ ์ด์ง„ํŠธ๋ฆฌ ๊ธฐ๋ฐ˜์˜ ์ž๋ฃŒ๊ตฌ์กฐ๋กœ ํž™์„ ํ†ตํ•ด ์ตœ๋Œ“๊ฐ’ / ์ตœ์†Ÿ๊ฐ’์„ ๋น ๋ฅด๊ฒŒ ์ฐพ์„ ์ˆ˜ ์žˆ๋‹ค. ํŒŒ์ด์ฌ์—์„œ ์ œ๊ณตํ•˜๋Š” heapq ๋ชจ๋“ˆ์„ ์ด์šฉํ•ด ํž™์„ ๋น ๋ฅด๊ฒŒ ๊ตฌํ˜„ํ•  ์ˆ˜ ์žˆ๋Š”๋ฐ ์ด ๋ชจ๋“ˆ์€ ๊ธฐ๋ณธ์ ์œผ๋กœ ์ตœ์†Œํž™์„ ์ง€์›ํ•œ๋‹ค. ์ตœ๋Œ€ํž™์„ ์‚ฌ์šฉํ•˜๊ณ  ์‹ถ๋‹ค๋ฉด ์›์†Œ๋ฅผ ์Œ์ˆ˜๋กœ ๋ณ€ํ™˜ํ•ด์„œ ์ €์žฅํ•ด ์ฃผ๋ฉด ...

[Algorithm] : DFS, BFS

June 22 2022

DFS์™€ BFS๋Š” ๊ทธ๋ž˜ํ”„ ํƒ์ƒ‰ ์•Œ๊ณ ๋ฆฌ์ฆ˜์ด๋‹ค.

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๐Ÿ‘ป

00.

April 26 2022

์ด๋ ‡๊ฒŒ ์˜ฌ๋ฆฌ๋ฉด ๋˜๋Š”๊ตฌ๋‚˜

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