29. λ¬Έμžμ—΄ν•¨μˆ˜ left, right, midν•¨μˆ˜μ™€ 및 μ—°μ‚°μž μ΄μš©ν•˜μ—¬ κ³ κ°μ£Όμš”μ •λ³΄ 별 ν‘œμ‹œν•˜λŠ” 방법


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