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๐Ÿ“Today I Learned (์ž๊ธฐ์ฃผ๋„ํ•™์Šต์„ ์ง„ํ–‰, ๋ฐฐ์šด ๋‚ด์šฉ์„ ์ •๋ฆฌ)

JavaScript 25.81% HTML 13.06% CSS 0.30% Java 60.83%

til's Introduction

01. TIL ์†Œ๊ฐœ

๐Ÿ“Today I Learned

Today I Learned. ๊ทธ๋‚  ๊ทธ๋‚  ๋ชจ๋“  ํ™œ๋™๋“ค์„ ์ •๋ฆฌ

  • ์•Œ๊ณ ๋ฆฌ์ฆ˜
  • SQL

Algorithm

1) ๋ฌธ์ž์—ด ํ™œ์šฉ

filter 

2) BFS

์ผ๋ฐ˜์ ์ธ BFS : ํ์™€ visited ๋ฐฐ์—ด ์‚ฌ์šฉ

3) DFS

4) ์ผ์ฐจ์› ๋ฐฐ์—ด์˜ ํ™œ์šฉ

5) ์ด์ฐจ์› ๋ฐฐ์—ด์˜ ํ™œ์šฉ

ํŒจํ„ด ํŒŒ์•… : ๋‹จ๊ณ„๋ณ„๋กœ  n-1์”ฉ ์ค„์–ด๋“ฌ
์ •์‚ผ๊ฐํ˜• -> ์ง๊ฐ์‚ผ๊ฐํ˜•

6) ๊ทธ๋ฆฌ๋””[ํƒ์š• ์•Œ๊ณ ๋ฆฌ์ฆ˜]

1. ์ •๋ ฌ์ด ํ•ต์‹ฌ (์ •๋ ฌ ๊ธฐ์ค€ ์ •ํ•˜๊ธฐ : ์–ด๋–ค ๊ฒƒ์„ ์˜ค๋ฆ„์ฐจ์ˆœ, ๋‚ด๋ฆผ์ฐจ์ˆœ ํ• ์ง€)
2. ์ตœ์ ํ•ด๊ฐ€ ์žˆ๋‹ค๊ณ  ๊ฐ€์ •
3. DP๋ณด๋‹ค ๋น ๋ฅผ ์ˆ˜ ์žˆ์Œ (DP์˜ ์ž์‹๊ฐ™์€ ์œ ํ˜•)

<๊ทธ๋ฆฌ๋”” ์กฐ๊ฑด> 
- ์ง€๊ธˆ์˜ ์„ ํƒ์ด ์ตœ์„ ์ด ๋ ๊ฒƒ
- ํ˜„์žฌ์˜ ์„ ํƒ์ด ๋‹ค์Œ ์„ ํƒ์— ์˜ํ–ฅ ์—†์„ ๋•Œ
- ์ž…๋ ฅ ๊ฐ’์ด ์—„์ฒญ ํด ๋•Œ (์™„ํƒ์œผ๋กœ ๋Œ๋ฆฌ๋ฉด ์‹œ๊ฐ„ ์ดˆ๊ณผ)
- ๋ฌธ์ œ์—์„œ ์š”๊ตฌํ•˜๋Š” ๊ฑด ์ •ํ™•ํ•œ ์กฐํ•ฉ ๊ฐ’์ด ์•„๋‹ˆ๋‹ค
- ์ตœ๋Œ€์˜ ๊ฐœ์ˆ˜๋งŒ ๊ตฌํ•˜๋ฉด ๋œ๋‹ค
- budget์€ ์˜ˆ์‚ฐ์„ ๋‚˜ํƒ€๋‚ด๋ฉฐ, 1 ์ด์ƒ 10,000,000 ์ดํ•˜์˜ ์ž์—ฐ์ˆ˜์ž…๋‹ˆ๋‹ค. (์ธํ’‹ ๊ฐ’์ด ๊ธธ๋‹ค => ์™„ํƒ ๋ถˆ๊ฐ€) 

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