visible true最近AtCoderãªã©ã«å‚åŠ ã—ã¦ã„ã¦ã€ã™ã¹ã¦ã®çµ„ã¿åˆã‚ã›ã‚’生æˆã—ã¤ã¤è¨ˆç®—ã™ã‚‹ã¨ã„ã£ãŸæ©Ÿä¼šã«ãªã‚“ã©ã‹éé‡ã—ã€æ¯Žå›žé ‘å¼µã£ã¦å®Ÿè£…ã—ã¦ã„ãŸã®ã ã‘ã©ã€bit全探索ã¨ã„ã†æ–¹æ³•ãŒã‚るらã—ã„ã¨çŸ¥ã‚Šã€èª¿ã¹ã¦ã€Kotlinã§ã©ã†æ›¸ãã‹è€ƒãˆãŸçµæžœæ¬¡ã®ã‚ˆã†ã«ãªã£ãŸã€‚ import java.util.BitSet fun bitFullSearch(n: Int): List<BitSet> = (0 until (1 shl n)).map { bit -> BitSet(n).apply { repeat(n) { i -> set(i, bit and (1 shl i) > 0) } } } ãŸã¨ãˆã° bitFullSearch(4) ãªã©ã¨å‘¼ã³å‡ºã™ã¨ã€ãã‚Œãžã‚Œæ¬¡ã®bitãŒç«‹ã£ãŸBitSetã®ãƒªã‚¹ãƒˆãŒæ‰‹ã«å…¥ã‚‹ã€‚ {} {0} {1} {0, 1} {2} {0, 2} {1, 2} {0, 1, 2} {
jQueryã®CSSセレクタAPIを高速ã«æ‰±ã†æ–¹æ³• - KAYAC Engineers' Blog
Javascript Image Dropdown v3.5
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