# how to look up blocked numbers

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### Enter an incrementing sorted array and a number s, look for two numbers in the array, and yes their sum is exactly s, if there are many pairs of numbers and equals s, the output of the two numbers is the smallest.

Enter an incrementing sorted array and a number s, look for two numbers in the array, and yes their sum is exactly s, if there are many pairs of numbers and equals s, the output of the two numbers is the smallest.Two kinds of problem solving step 1: Consider the case with the smallest product:Public arraylist2: Order i

### Look for the outline of the numbers in the picture and crop the numbers.

. Chain_approx_simple)#looking for outlinesCv2.imshow ('Imageshow', image)#* * Display return value image, in fact, with the input parameters of the Thresh original no difference * *#Print (np.size (contours)) ##Print (contours[0]) # Prints the coordinates of all points of the first outline, changing the 0 here to 0--(total contour number-1) to print the coordinates of all points of the corresponding contour#print (hierarchy) #** prints out the relationship between the corresponding outlines * *

### Identification code: Where to look for numbers (iii)

=bool) nexts = [(1,0), (0,1), ( -1,0), (0,-1)] groups = [] for L in range (Partshape[1]): For C in range (Partshape[0]): If not looked[c,l]: looked[c,l] = True if pre DICTED[C,L]: group = [] FIFO = [(c,l)] while Len (FIFO)!=0: TMP = Fifo.pop (0) looked[tmp[0],tmp[1]] = True if predicted [Tmp[0],tmp[1]]: Group.append ((tmp[0],tmp[1])) for N in nexts: Nextpos = (n[0]+tmp[0],n[1]+tmp[1]) if 0Write a very bad program. The idea is that, when there

### Look for numbers that appear more than half the number in the array

The "title" Array has a number that appears more than half the length of the array to find the number. "Idea 1" because the number of numbers to look for is more than half the length of the array, so if the array is sorted, then its median is necessarily the number we are looking for, so our task is to sort the array, and the performance of the best quick sort with the time complexity O (nlogn　　, we can d

### 3Sum (look for the sum of three numbers for the set of the specified number of medium)

Topic meaning: Give a random ordinal group, in which look for all cases of three numbers and for 0, these conditions cannot be repeated, ascending orderIdea: The front 2sum, I use a map, natural that the problem map is more efficient than the double pointer, the problem needs to be sorted first, and then give three pointers, I, J, KFor the I pointer is traversed backwards, for a fixed I pointer, in fact, is

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### Identification code: Where to look for numbers (ii)

, -1.42620355e-03, 2.70045514e-04, 3.07247472e-03, 3.54542386e-03, 5.50694470e-03, -1.48702671e-03, 1.19550942e-03, 2.22658765e-03, 2.10573442e-03, -5.88441942e-05, 2.21007257e-03, -1.07699489e-04, -4.54425504e-03, -1.07385611e-03, -3.67573528e-04, 3.44609201e-04, -3.16044812e-03, -3.36530877e-03, -3.95622536e-03, 1.43149147e-03, -3.31763110e-03, -3.44537238e-03, -2.35134639e-03, 1.79640507e-03, 1.02597557e-03, 3.45353045e-03, -4.86053025e-03, 1.83903418e-03, -4.

### Look at C language code conversion-the binary representation of negative numbers

symbol bit, and then add 1 in the last bit. For example, the 10000000 00000000 00000000 00000101 anti-code is: 11111111 11111111 11111111 11111010. Then, the complement code is: 11111111 11111111 11111111 11111010 + 1 = 11111111 11111111 11111111 Therefore,-5 is expressed in the computer as 11111111 11111111 11111111 11111011. Convert to hexadecimal: 0 xfffffffb. Let's look at how integer-1 is represented in a computer. Suppose this is also an int ty

### Look at the example of VFP: Automatically generate numbers when you add records to a datasheet

This example in "Look at the case of VFP: To add records to the data table and verify that the input data is legitimate" on the basis of improvements, to achieve the addition of records can not only complete the verification of input data, but also has the function of automatically generating numbers. The code that automatically generates the number is added to the form's Init event and click in the Add but

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