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Exercise Title
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Description
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1
Given a list of integers of length ≥ 4, return the average of the first two and last two elements.
Code Completion
Given a list of integers of length ≥ 4, return the average of the first two and last two elements.
CodeCheck
Lists - Simple Exercises
,
No loops
2
Given a list of integers of length ≥ 3, return the average of the first, last, and middle element (or the two middle elements if the length is even).
Code Completion
Given a list of integers of length ≥ 3, return the average of the first, last, and middle element (or...
CodeCheck
Lists - Simple Exercises
,
No loops
3
Given a list of integers, swap the first and last elements.
Code Completion
Given a list of integers, swap the first and last elements.
CodeCheck
Lists - Simple Exercises
,
No loops
4
Given a list of integers, swap the first two and the last two elements.
Code Completion
Given a list of integers, swap the first two and the last two elements.
CodeCheck
Lists - Simple Exercises
,
No loops
5
Given a list of integers, count how many elements are negative.
Code Completion
Given a list of integers, count how many elements are negative.
CodeCheck
Lists - Simple Exercises
,
Counting Elements
6
Given a list a, count how many times the ith element from the front equals the ith element from the back.
Code Completion
Given a list a, count how many times the ith element from the front equals the ith element from the...
CodeCheck
Lists - Simple Exercises
,
Counting Elements
7
Given a list of integers and two values a and b, count how many elements are at least a and at most b.
Code Completion
Given a list of integers and two values a and b, count how many elements are at least a and...
CodeCheck
Lists - Simple Exercises
,
Counting Elements
8
Given a list of integers, return the most frequent element.
Code Completion
Given a list of integers, return the most frequent element. If there is more than one element with maximum frequency,...
CodeCheck
Lists - Simple Exercises
,
Counting Elements
9
Given a list of integers, return a list of all elements that occur with maximum frequency.
Code Completion
Given a list of integers, return a list of all elements that occur with maximum frequency.
CodeCheck
Lists - Simple Exercises
,
Counting Elements
10
Given a list of integers, return the position of the first element that occurs more than once, or -1 if all elements occur exactly once.
Code Completion
Given a list of integers, return the position of the first element that occurs more than once, or -1 if...
CodeCheck
Lists - Simple Exercises
,
Counting Elements
11
Given a list of integers, return a list of all elements that occur exactly once.
Code Completion
Given a list of integers, return a list of all elements that occur exactly once.
CodeCheck
Lists - Simple Exercises
,
Counting Elements
12
Given a list of integers, remove all elements that occur more than once, leaving the first occurrence.
Code Completion
Given a list of integers, remove all elements that occur more than once, leaving the first occurrence.
CodeCheck
Lists - Simple Exercises
,
Counting Elements
13
Given two lists of integers a and b of the same length, count the number of positions where the lists have the same elements.
Code Completion
Given two lists of integers a and b of the same length, count the number of positions where the lists...
CodeCheck
Lists - Simple Exercises
,
Counting Elements
14
Given two lists of integers a and b of the same length, count the number of positions where the list elements differ by at least 2.
Code Completion
Given two lists of integers a and b of the same length, count the number of positions where the list...
CodeCheck
Lists - Simple Exercises
,
Counting Elements
15
Given two lists a and b, remove all elements of b from a.
Code Completion
Given two lists a and b, remove all elements of b from a.
CodeCheck
Lists - Simple Exercises
,
Double Loops
16
Given two lists a and b, return a list that contains all elements occurring in a but not in b.
Code Completion
Given two lists a and b, return a list that contains all elements occurring in a but not in b.
CodeCheck
Lists - Simple Exercises
,
Double Loops
17
Given a list a, return the longest n so that the first n elements equal the last n elements.
Code Completion
Given a list a, return the longest n so that the first n elements equal the last n elements.
CodeCheck
Lists - Simple Exercises
,
Double Loops
18
Given a list of integers, return the largest sum of consecutive elements.
Code Completion
Given a list of integers, return the largest sum of consecutive elements.
CodeCheck
Lists - Simple Exercises
,
Double Loops
19
Given a list of integers, return the largest sequence whose reverse also occurs somewhere in the list.
Code Completion
Given a list of integers, return the largest sequence whose reverse also occurs somewhere in the list.
CodeCheck
Lists - Simple Exercises
,
Double Loops
20
Given a list a of integers, return a list of all elements of a that occur exactly once.
Code Completion
Given a list a of integers, return a list of all elements of a that occur exactly once.
CodeCheck
Lists - Simple Exercises
,
Double Loops
21
Given a list of integers, return a list of lists of length 2, containing each unique element together with its frequency.
Code Completion
Given a list of integers, return a list of lists of length 2, containing each unique element together with its...
CodeCheck
Lists - Simple Exercises
,
Double Loops
22
Given a list of integers, return the position of the longest subsequence of consecutive integers a, a + 1, a + 2, .
Code Completion
Given a list of integers, return the position of the longest subsequence of consecutive integers a, a + 1, a...
CodeCheck
Lists - Simple Exercises
,
Double Loops
23
Given an integer n, return a list of length n containing 1 -1 1 -1 .
Code Completion
Given an integer n, return a list of length n containing 1 -1 1 -1 ...
CodeCheck
Lists - Simple Exercises
,
Filling
24
Given integers n and k, return a list of length n containing 0 1 2 .
Code Completion
Given integers n and k, return a list of length n containing 0 1 2 ... k-1 0 1 2...
CodeCheck
Lists - Simple Exercises
,
Filling
25
Given integers a and b, return a list containing a, a + 1, a + 2, .
Code Completion
Given integers a and b, return a list containing a, a + 1, a + 2, ..., b.
CodeCheck
Lists - Simple Exercises
,
Filling
26
Given integers a and b, return a list containing all even numbers that are at least a and at most b.
Code Completion
Given integers a and b, return a list containing all even numbers that are at least a and at most...
CodeCheck
Lists - Simple Exercises
,
Filling
27
Given an integer n, return a list containing 1 2 2 3 3 3 4 4 4 4 .
Code Completion
Given an integer n, return a list containing 1 2 2 3 3 3 4 4 4 4 ... and...
CodeCheck
Lists - Simple Exercises
,
Filling
28
Given a list of integers and a value, return the position of the last occurrence of the value in the list, or -1 if the value does not exist.
Code Completion
Given a list of integers and a value, return the position of the last occurrence of the value in the...
CodeCheck
Lists - Simple Exercises
,
Finding Elements
29
Given a list of integers and a value, return the difference between the last and first position of the value in the list, or -1 if the value does not exist.
Code Completion
Given a list of integers and a value, return the difference between the last and first position of the value...
CodeCheck
Lists - Simple Exercises
,
Finding Elements
30
Given a list of integers and a value, return a list of all positions of the value in the list.
Code Completion
Given a list of integers and a value, return a list of all positions of the value in the list.
CodeCheck
Lists - Simple Exercises
,
Finding Elements
31
Given a list of integers and a value, return the position of the element that is closest to the value.
Code Completion
Given a list of integers and a value, return the position of the element that is closest to the value....
CodeCheck
Lists - Simple Exercises
,
Finding Elements
32
Given two lists of integers of the same length, return the first position where their elements are the same.
Code Completion
Given two lists of integers of the same length, return the first position where their elements are the same.
CodeCheck
Lists - Simple Exercises
,
Finding Elements
33
Given two lists of integers of the same length, return the first position where their elements differ.
Code Completion
Given two lists of integers of the same length, return the first position where their elements differ.
CodeCheck
Lists - Simple Exercises
,
Finding Elements
34
Given a list of integers, return the position of the first occurrence of the largest element.
Code Completion
Given a list of integers, return the position of the first occurrence of the largest element.
CodeCheck
Lists - Simple Exercises
,
Maximum and Minimum
35
Given a list of integers, return the position of the last occurrence of the largest element.
Code Completion
Given a list of integers, return the position of the last occurrence of the largest element.
CodeCheck
Lists - Simple Exercises
,
Maximum and Minimum
36
Given a list of integers, return the difference of the positions of the first and the last occurrence of the largest element.
Code Completion
Given a list of integers, return the difference of the positions of the first and the last occurrence of the...
CodeCheck
Lists - Simple Exercises
,
Maximum and Minimum
37
Given a list of integers, return the difference between the maximum and minimum.
Code Completion
Given a list of integers, return the difference between the maximum and minimum.
CodeCheck
Lists - Simple Exercises
,
Maximum and Minimum
38
Given a list of integers, swap the the maximum and minimum.
Code Completion
Given a list of integers, swap the the maximum and minimum.
CodeCheck
Lists - Simple Exercises
,
Maximum and Minimum
39
Given a list of integers, return the second-largest element.
Code Completion
Given a list of integers, return the second-largest element.
CodeCheck
Lists - Simple Exercises
,
Maximum and Minimum
40
Given a list of elements, find the shortest distance between two consecutive elements.
Code Completion
Given a list of elements, find the shortest distance between two consecutive elements.
CodeCheck
Lists - Simple Exercises
,
Maximum and Minimum
41
Given a list of integers and an integer n, remove all elementts > n or < -n.
Code Completion
Given a list of integers and an integer n, remove all elementts > n or < -n. Shift all remaining...
CodeCheck
Lists - Simple Exercises
,
Moving or Removing Elements
42
Given a list of integers, move all zeroes to the back.
Code Completion
Given a list of integers, move all zeroes to the back.
CodeCheck
Lists - Simple Exercises
,
Moving or Removing Elements
43
Given a list of integers, move all zeroes to the front.
Code Completion
Given a list of integers, move all zeroes to the front.
CodeCheck
Lists - Simple Exercises
,
Moving or Removing Elements
44
Given a list of integers, move all negative numbers to the front and all positive numbers to the back, keeping their relative order.
Code Completion
Given a list of integers, move all negative numbers to the front and all positive numbers to the back, keeping...
CodeCheck
Lists - Simple Exercises
,
Moving or Removing Elements
45
Given a list of integers, remove all even elements that occur exactly twice.
Code Completion
Given a list of integers, remove all even elements that occur exactly twice.
CodeCheck
Lists - Simple Exercises
,
Moving or Removing Elements
46
Given a list of integers, remove all adjacent duplicates.
Code Completion
Given a list of integers, remove all adjacent duplicates.
CodeCheck
Lists - Simple Exercises
,
Moving or Removing Elements
47
Given a list of integers, return the sum of all positive elements.
Code Completion
Given a list of integers, return the sum of all positive elements.
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
48
Given a list of integers, find the largest sum of two different elements in the list.
Code Completion
Given a list of integers, find the largest sum of two different elements in the list.
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
49
Given a list of floating-point numbers, return a list of the averages of consecutive element pairs of the original list.
Code Completion
Given a list of floating-point numbers, return a list of the averages of consecutive element pairs of the original list.
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
50
Given a list of integers and an integer n, return a list of the averages of n consecutive elements of the original list.
Code Completion
Given a list of integers and an integer n, return a list of the averages of n consecutive elements of...
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
51
Given a list of integers, return the average of all elements that are not the maximum or minimum.
Code Completion
Given a list of integers, return the average of all elements that are not the maximum or minimum.
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
52
Given a list of integers, replace each element with the average of its neighbors.
Code Completion
Given a list of integers, replace each element with the average of its neighbors.
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
53
Given a list of integers, return the sum of all odd elements.
Code Completion
Given a list of integers, return the sum of all odd elements.
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
54
Given a list of integers and two values a and b, return the sum of all elements that are at least a and at most b.
Code Completion
Given a list of integers and two values a and b, return the sum of all elements that are at...
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
55
Given a list of integers, return the average of all positive elements.
Code Completion
Given a list of integers, return the average of all positive elements.
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
56
Given a list of strings and a string s, return the average length of all strings containing s.
Code Completion
Given a list of strings and a string s, return the average length of all strings containing s.
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
57
Given a list of integers, return the product of all non-zero elements.
Code Completion
Given a list of integers, return the product of all non-zero elements.
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
58
Given a list of integers, give the largest n so that the sum of the first n elements equals the sum of the remaining elements.
Code Completion
Given a list of integers, give the largest n so that the sum of the first n elements equals the...
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
59
Given a list of integers, give the largest n ≤ length / 2 so that the sum of the first n elements equals the sum of the last n elements.
Code Completion
Given a list of integers, give the largest n ≤ length / 2 so that the sum of the first...
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
60
Given a list of integers, give the largest sum of n consecutive elements.
Code Completion
Given a list of integers, give the largest sum of n consecutive elements.
CodeCheck
Lists - Simple Exercises
,
Sums
,
Averages
,
Products
61
Given a list of integers, return a list of length 2 containing the first and last element, in sorted order.
Code Completion
Given a list of integers, return a list of length 2 containing the first and last element, in sorted order.
CodeCheck
Lists - Simple Exercises
,
Two Answers
62
Given a list of integers, return a list of length 2 containing the minimum and the maximum.
Code Completion
Given a list of integers, return a list of length 2 containing the minimum and the maximum.
CodeCheck
Lists - Simple Exercises
,
Two Answers
63
Given a list of integers, return a list of length 2, with the number of positive and the number of negative elements in the list.
Code Completion
Given a list of integers, return a list of length 2, with the number of positive and the number of...
CodeCheck
Lists - Simple Exercises
,
Two Answers
64
Given a list of integers, return a list of length 2, each being a list.
Code Completion
Given a list of integers, return a list of length 2, each being a list. The first one holds the...
CodeCheck
Lists - Simple Exercises
,
Two Answers
65
Given a list of integers, return a list of length 2, each being a list.
Code Completion
Given a list of integers, return a list of length 2, each being a list. The first one holds the...
CodeCheck
Lists - Simple Exercises
,
Two Answers
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