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‎Array Mathematics.py

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# Basic mathematical functions operate element-wise on arrays. They are available both as operator overloads and as functions in the NumPy module.
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# import numpy
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# a = numpy.array([1,2,3,4], float)
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# b = numpy.array([5,6,7,8], float)
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# print a + b #[ 6. 8. 10. 12.]
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# print numpy.add(a, b) #[ 6. 8. 10. 12.]
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# print a - b #[-4. -4. -4. -4.]
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# print numpy.subtract(a, b) #[-4. -4. -4. -4.]
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# print a * b #[ 5. 12. 21. 32.]
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# print numpy.multiply(a, b) #[ 5. 12. 21. 32.]
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# print a / b #[ 0.2 0.33333333 0.42857143 0.5 ]
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# print numpy.divide(a, b) #[ 0.2 0.33333333 0.42857143 0.5 ]
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# print a % b #[ 1. 2. 3. 4.]
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# print numpy.mod(a, b) #[ 1. 2. 3. 4.]
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# print a**b #[ 1.00000000e+00 6.40000000e+01 2.18700000e+03 6.55360000e+04]
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# print numpy.power(a, b) #[ 1.00000000e+00 6.40000000e+01 2.18700000e+03 6.55360000e+04]
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# Task
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# You are given two integer arrays, and of dimensions X.
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# Your task is to perform the following operations:
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# Add ( + )
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# Subtract ( - )
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# Multiply ( * )
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# Integer Division ( / )
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# Mod ( % )
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# Power ( ** )
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# Input Format
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# The first line contains two space separated integers, and .
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# The next lines contains space separated integers of array .
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# The following lines contains space separated integers of array .
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# Output Format
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# Print the result of each operation in the given order under Task.
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# Sample Input
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# 1 4
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# 1 2 3 4
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# 5 6 7 8
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# Sample Output
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# [[ 6 8 10 12]]
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# [[-4 -4 -4 -4]]
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# [[ 5 12 21 32]]
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# [[0 0 0 0]]
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# [[1 2 3 4]]
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# [[ 1 64 2187 65536]]
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# Use // for division in Python 3.
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import numpy
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r = input().split()
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a = numpy.array([input().split()],int)
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b = numpy.array([input().split()],int)
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print(numpy.add(a,b))
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print(numpy.subtract(a,b))
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print(numpy.multiply(a,b))
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print(a//b)
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print(numpy.mod(a,b))
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print(numpy.power(a,b))
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‎Find a string.py

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# In this challenge, the user enters a string and a substring. You have to print the number of times that the substring occurs in the given string. String traversal will take place from left to right, not from right to left.
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# NOTE: String letters are case-sensitive.
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# Input Format
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# The first line of input contains the original string. The next line contains the substring.
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# Constraints
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# Each character in the string is an ascii character.
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# Output Format
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# Output the integer number indicating the total number of occurrences of the substring in the original string.
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# Sample Input
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# ABCDCDC
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# CDC
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# Sample Output
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# 2
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# Concept
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# Some string processing examples, such as these, might be useful.
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# There are a couple of new concepts:
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# In Python, the length of a string is found by the function len(s), where is the string.
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# To traverse through the length of a string, use a for loop:
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# for i in range(0, len(s)):
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# print (s[i])
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# A range function is used to loop over some length:
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# range (0, 5)
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# Here, the range loops over to . is excluded.
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def count_substring(string, sub_string):
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length = len(sub_string)
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result = 0
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for i in range(0,len(string)):
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for j in range(i+length,len(string)):
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if string[i:j] == sub_string:
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result += 1
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return(result)
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if __name__ == '__main__':
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string = input().strip()
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sub_string = input().strip()
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count = count_substring(string, sub_string)
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print(count)
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# def count_substring(string, sub_string):
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# count=0
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# #print(len(string),len(sub_string))
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# for i in range(0, len(string)-len(sub_string)+1):
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# if string[i] == sub_string[0]:
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# flag=1
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# for j in range (0, len(sub_string)):
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# if string[i+j] != sub_string[j]:
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# flag=0
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# break
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# if flag==1:
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# count += 1
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# return count

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