๋ชฉ๋กํ”Œ๋กœ์ด๋“œ ์•Œ๊ณ ๋ฆฌ์ฆ˜ (1)

YS's develop story

๋™์ ๊ณ„ํš๋ฒ•๊ณผ ํ”Œ๋กœ์ด๋“œ ์•Œ๊ณ ๋ฆฌ์ฆ˜

์•Œ๊ณ ๋ฆฌ์ฆ˜ ) ๋™์  ๊ณ„ํš๋ฒ•๊ณผ ํ”Œ๋กœ์ด๋“œ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ๋™์  ๊ณ„ํš๋ฒ•, Dynamic Programming ๋™์  ๊ณ„ํš๋ฒ•์˜ ์›๋ฆฌ๋Š” ๋งค์šฐ ๊ฐ„๋‹จํ•ฉ๋‹ˆ๋‹ค. ์ผ๋ฐ˜์ ์œผ๋กœ ์ฃผ์–ด์ง„ ๋ฌธ์ œ๋ฅผ ํ’€๊ธฐ ์œ„ํ•ด์„œ, ๋ฌธ์ œ๋ฅผ ์—ฌ๋Ÿฌ ๊ฐœ์˜ ํ•˜์œ„ ๋ฌธ์ œ(subproblem)๋กœ ๋‚˜๋ˆ„์–ด ํ‘ผ ๋‹ค์Œ, ๊ทธ๊ฒƒ์„ ๊ฒฐํ•ฉํ•˜์—ฌ ์ตœ์ข…์ ์ธ ๋ฌธ์ œ๋ฅผ ํ‘ธ๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค. Step 1 : ๋ฌธ์ œ์˜ ๋‹ต์„ ๊ตฌํ•˜๊ธฐ ์œ„ํ•œ recursive property๋ฅผ ์„ธ์šด๋‹ค. Step 2 : bottom-up ๋ฐฉ์‹์œผ๋กœ ์ž‘์€ ๋ฌธ์ œ๋“ค์„ ๋จผ์ € ํ’€๋ฉด์„œ ์ตœ์ข… ๋ฌธ์ œ๋ฅผ ํ’€๊ฒ ๋‹ค. ๋™์  ๊ณ„ํš ์•Œ๊ณ ๋ฆฌ์ฆ˜์€ ์ตœ๋‹จ๊ฒฝ๋กœ ๋ฌธ์ œ, ํ–‰๋ ฌ์˜ ์ œ๊ณฑ ๋ฌธ์ œ ๋“ฑ์˜ ์ตœ์ ํ™”์— ์‚ฌ์šฉ๋ฉ๋‹ˆ๋‹ค. ๋™์  ๊ณ„ํš๋ฒ•์€ ๋ฌธ์ œ๋ฅผ ํ•ด๊ฒฐํ•˜๊ธฐ ์œ„ํ•œ ๋ชจ๋“  ๋ฐฉ๋ฒ•์„ ๊ฒ€ํ† ํ•˜๊ณ , ๊ทธ์ค‘์— ์ตœ์ ์˜ ํ’€์ด๋ฒ•์„ ์ฐพ์•„๋‚ด๊ธฐ ๋•Œ๋ฌธ์ด์ฃ . ํ”Œ๋กœ์ด๋“œ์˜ ์ตœ๋‹จ ๊ฒฝ๋กœ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ํ”Œ๋กœ์ด๋“œ ์•Œ๊ณ ๋ฆฌ์ฆ˜์€ ๊ฐ๊ฐ์˜ ์ •..

Algorithm 2021. 4. 16. 19:04