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婕敾:闂茶亰寰俊涔嬩簩鍒嗘煡鎵?></span><span class=

浣犲共鍢涘憿

鐮旂┒浜屽垎鏌ユ壘

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鎴戝幓锛屼綘瀛︿範浜嗭紝缁欐垜璇磋鎬庝箞鍥炰簨

涔熷彨鎶樺崐鎺掑簭锛岃繖涓柟娉曟煡璇㈡瘮杈冮珮鏁堬紝鏃堕棿澶嶆潅搴︿负O(log2n),涓嶈繃浠栨湁涓€涓姹傦紝瑕佹槸鏈夊簭鐨勯『搴忕殑瀛樺偍缁撴瀯琛ㄣ€?/span>

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鍝囷紝澶т浆涓句釜馃尠

濂斤紝灏辨槸鐩爣鏌ユ壘鏁版瘡娆¢兘鍜屾暟缁勭殑涓棿鏁板仛姣旇緝锛屼腑闂存暟(mid)灏辨槸low(鏈€浣?+high(鏈€楂?鐨勫钩鍧囧€肩殑杩欎釜浣嶇疆銆傚鏋滅洰鏍囨暟>mid锛屽氨鎶妉ow寰€鍚庣Щ鍔紝濡傛灉灏忓垯鎶奾igh寰€鍓嶇Щ鍔ㄥ惊鐜洿鍒版壘鍒拌繖涓暟涓烘锛屾病鏈夊氨杩斿洖-1濂戒簡锛屾濂芥垜鐢讳簡鍥剧粰浣犵湅鐪嬨€?/span>

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婕敾:闂茶亰寰俊涔嬩簩鍒嗘煡鎵?></p> 
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鍙互鍝︼紝浠g爜鍐?/p>

浣犳€庝箞鐭ラ亾鎴戝垰鍐欏畬婕敾:闂茶亰寰俊涔嬩簩鍒嗘煡鎵? class=

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public static int binarySearch (int target,int[] ary) {
   int low = 0;
   int high = ary.length - 1;
   while (low <= high) {
       int middle = (low + high) >> 1;
       if (ary[middle] > target) {
           high = middle - 1;
       } else if (ary[middle] < target) {
           low = middle + 1;
       } else {
           return middle;
       }
   }
   return -1;
}
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澶禐浜嗭紝鍚戜綘瀛︿範锛岃阿璋?/p>

涓嶈阿鍝堬紝鍥炲ご鎴戣繕璇锋暀浣犲憿

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濂界殑锛屾棭鐐逛紤鎭?/span>

鍡棷鎷滄嫓

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澶у鏈夊ソ鐨勬兂娉曡鑱旂郴灏忕紪锛屾湁寤鸿鎴栬€呮剰瑙佸彲浠ユ彁鍑猴紝璇峰ぇ瀹跺澶氭寚鏁欍€?/p>

灏忕紪寰俊:thinkertoone




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