Answer:
This is one of the efficient ways to find the number of occurrences of a given number in a list:
<h3><u>def find_num(arr,n):</u></h3><h3><u> return len([count for count in arr if count == n])</u></h3><h3><u>print(find_num([0,1,1,1,0],1))</u></h3>
If you want a simpler version, you can try this:
<h2><u>def find_num(arr,n):</u></h2><h2><u> count = 0 </u></h2><h2><u> for i in range(len(arr)): </u></h2><h2><u> if arr[i]==n: </u></h2><h2><u> count += 1 </u></h2><h2><u> return count</u></h2><h2><u>print(find_num([0,1,1,1,0],1))</u></h2>
This is the simplest method:
<h2><u>
arr = [0,1,1,1,0]</u></h2><h2><u>
print(arr.count(1))</u></h2>
I think I gave you enough examples. This should get you started off easily.
If you need an explanation, I am happy to help you. BTW I started python 6 months back so even I am pretty new to this.
It's details view. I hope this help.
Answer:
EXAMPLE -
Create a variable and assign your age
var myage = 32;
type your age:
console.log(my age) ;
Notice that we did not type the actual numeric age. We used the variable instead. There wouldn’t be any purpose of declaring a variable if we were going to type 32 directly.
This makes the scrip more portable which means that the result on the screen is independent of the code console.log(myAge); . If we need to change our age all we have to do is to assign another number to the variable myAge and the output will change automatically. That’s the purpose of a variable.
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