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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                全部異或運算即可: ~~~ /** * 找到數組中出現次數為奇數的一個數,假定數組中其余數出現為偶次 * @param arr 待查找數組 * @return 下標 */ public int getNumber(int[] arr){ if(arr == null || arr.length == 0) return -1; int res = arr[0]; for (int i = 1; i < arr.length; i++) { res = res ^ arr[i]; } return res; } ~~~
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                              哎呀哎呀视频在线观看