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+ class SolutionMaxArea {
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+ public int maxArea (int [] height ) {
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+ // A์ B ๊ฐ ๋ฉด์ = (A์ B์ X์ถ ์ฐจ์ด) * (A์ B Y์ถ ์ค ๋ ์์ Y์ถ ๊ธธ์ด)
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+ // 1๋ฒ์งธ ํ์ด ๋ฐฉ๋ฒ: ์ ํํ ์ ์๋ ๋ชจ๋ ๊ฒฝ์ฐ์ ๋ํด ์ ๊ฐ์ ๊ตฌํ๋ค, ์๊ฐ๋ณต์ก๋: O(N^2) / ๊ณต๊ฐ๋ณต์ก๋: O(1)
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+ // (์ต์ข
) 2๋ฒ์งธ ํ์ด ๋ฐฉ๋ฒ: ์์ชฝ ๋์์ ํฌํฌ์ธํฐ๋ก ์ขํ์ค๋ฉด์ ๋ฉด์ ์ ๊ตฌํ๋ค, ์๊ฐ๋ณต์ก๋: O(N) / ๊ณต๊ฐ๋ณต์ก๋: O(1)
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+ // ์ ์ฒด ๋๋น๋ฅผ ๊ณ ๋ คํ๋ฉด์ ์์ง์ฌ์ผํ๋ค.
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+ // ๋งค๋ฒ ๋ฉด์ ์ ๊ณ์ฐํ๊ณ , ๋ ํฌ๋ฉด ์ ์ฅํ๋ค.
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+ // lt์ rt ์ค ๋ ๋ฎ์์ชฝ์ ์ขํ๋ค
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+
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+ var lt = 0 ;
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+ var rt = height .length -1 ;
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+ var maxArea = 0 ;
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+
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+ while (lt < rt ) {
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+ var x = rt - lt ;
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+ var y = Math .min (height [lt ], height [rt ]);
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+ var currentArea = x * y ;
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+ if (maxArea < currentArea ) {
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+ maxArea = currentArea ;
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+ }
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+
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+ if (height [lt ] < height [rt ]) {
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+ lt ++;
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+ } else {
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+ rt --;
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+ }
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+ }
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+
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+ return maxArea ;
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+ }
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+ }
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