二分查找 对于数字运算，左移一位相当于乘以2，两位相当于乘以4，依次下去，右移相反是除以 public static int binarySearch(int[]A,int value) { int low = 0; int len = A.length; int high = len -1; while(low <= high) { int mid = (low + high)>>1; if(A[mid] == value) return mid; else if (A[mid] < value) low = mid +1; else high = mid -1...
