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My Tech Blog (Algorithm)

๊ทธ๋ฆฌ๋”” ์•Œ๊ณ ๋ฆฌ์ฆ˜(Greedy Algorithm)๊ฐœ์š”greedyํ˜•์šฉ์‚ฌ - 1. ํƒ์š•์Šค๋Ÿฌ์šด 2.์š•์‹ฌ ๋งŽ์€  ๊ทธ๋ฆฌ๋”” ์•Œ๊ณ ๋ฆฌ์ฆ˜(Greedy Algorithm)์€ ๋งค ์ˆœ๊ฐ„ ๊ฐ€์žฅ ์ตœ์ ์ด๋ผ๊ณ  ํŒ๋‹จ๋˜๋Š” ์„ ํƒ์„ ๋ฐ˜๋ณตํ•˜์—ฌ ์ตœ์ข… ํ•ด๋‹ต์„ ๊ตฌํ•˜๋Š” ์•Œ๊ณ ๋ฆฌ์ฆ˜์ด๋‹ค. ์ฆ‰, ํ˜„์žฌ ๋‹จ๊ณ„์—์„œ์˜ ์ตœ์„ ์˜ ์„ ํƒ์ด ์ตœ์ข…์ ์œผ๋กœ๋„ ์ตœ์ ํ•ด(Optimal Solution)๊ฐ€ ๋œ๋‹ค๊ณ  ๊ฐ€์ •ํ•˜๊ณ  ๋ฌธ์ œ๋ฅผ ํ•ด๊ฒฐํ•œ๋‹ค. ์ฝ”๋”ฉํ…Œ์ŠคํŠธ์—์„œ ๋งŒ๋‚  ๊ฒฝ์šฐ ์‚ฌ์ „์— ์™ธ์šฐ๊ณ  ์žˆ์ง€ ์•Š์•„๋„ ํ’€ ์ˆ˜ ์žˆ๋Š” ๊ฐ€๋Šฅ์„ฑ์ด ๋†’์€ ๋ฌธ์ œ ์œ ํ˜•์ง€์—ญ ์ตœ์ ํ•ด(Local Optimum) → ์ „์—ญ ์ตœ์ ํ•ด(Global Optimum) ๋ณด์žฅ ๊ฐ€๋Šฅํ•ด์•ผ ํ•จํƒ์š•์  ์„ ํƒ(Greedy Choice)๊ณผ ์ตœ์  ๋ถ€๋ถ„ ๊ตฌ์กฐ(Optimal Substructure) ๋งŒ์กฑโœ… ๋™์  ํ”„๋กœ๊ทธ๋ž˜๋ฐ(Dynamic Programming)๊ณผ ์ฐจ์ด..
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