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Python program to find all the Combinations in a list with the given condition
When it is required to find all the combinations in a list with a specific condition, a simple iteration, the ‘isinstance’ method, the ‘append’ method and indexing are used.
Example
Below is a demonstration of the same −
print("Method definition begins")
def merge_the_vals(my_list_1, my_list_2, K):
index_1 = 0
index_2 = 0
while(index_1 < len(my_list_1)):
for i in range(K):
yield my_list_1[index_1]
index_1 += 1
for i in range(K):
yield my_list_2[index_2]
index_2 += 1
print("Method definition ends")
my_list_1 = [12, 56, 14, 28, 61, 73, 59, 90]
my_list_2 = [52, 16, 17, 34, 43, 16, 84, 57]
print("The first list is : " )
print(my_list_1)
print("The second list is : " )
print(my_list_2)
K = 1
print("The value of K is ")
print(K)
my_result = [element for element in merge_the_vals(my_list_1, my_list_2, K)]
print("The resultant list is : ")
print(my_result)
print("The list after sorting is : " )
my_result.sort()
print(my_result)Output
Method definition begins Method definition ends The first list is : [12, 56, 14, 28, 61, 73, 59, 90] The second list is : [52, 16, 17, 34, 43, 16, 84, 57] The value of K is 2 The resultant list is : [12, 56, 52, 16, 14, 28, 17, 34, 61, 73, 43, 16, 59, 90, 84, 57] The list after sorting is : [12, 14, 16, 16, 17, 28, 34, 43, 52, 56, 57, 59, 61, 73, 84, 90]
Explanation
A method is defined that takes two lists and a value of K as a parameter.
Depending on the value of index and length of list, the ‘yield’ operator is used to give result.
Outside the method, two lists of integers are defined and are displayed on the console.
The value for K is defined and displayed in the console.
A list comprehension is used, the method is called by passing the required parameters.
This is assigned to a result.
This is displayed as output on the console.
The result is sorted using a sort method and is displayed on the console.
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