Arrays - Basic Practice Problems Online

Write a program that computes the change in the average (arithmetic mean) of an unsorted array, when each number larger than $X$ in the array is changed to a different number $Y.$

What is the biggest average among the given arrays when all the numbers larger than $20$ are changed to $20$ in the arrays below?

[12, 10, 8, 36, 12, 10, 0, 20, 0, 2]
[28, 29, 11, 29, 2, 6, 4, 7, 13, 32]
[21, 32, 32, 12, 31, 20, 16, 6, 7, 11]
[32, 36, 17, 5, 10, 30, 20, 7, 33, 11]
[28, 10, 21, 8, 15, 15, 38, 30, 13, 4]
[16, 25, 15, 35, 4, 14, 22, 22, 39, 17]
[18, 5, 11, 6, 34, 8, 21, 3, 19, 22]
[1, 15, 38, 33, 17, 1, 3, 25, 22, 0]
[31, 1, 6, 2, 2, 14, 37, 27, 14, 14]
[2, 16, 2, 18, 16, 28, 25, 30, 8, 23]

What is the sum of the third highest number and the fifth highest number in the following unsorted array?

1	`[20, 24, 22, 13, 34, 13, 14, 33, 41, 10, 35, 1, 2, 24, 16, 20, 16, 23, 46, 41, 31, 7, 49, 25, 34, 15, 17, 18, 1, 30, 1, 17, 23, 43, 10, 4, 48, 44, 24, 23, 30, 0, 34, 30, 33, 27, 20, 42, 25, 5]`

Write a program that takes an unsorted array as an input and returns the sum of all numbers whose remainders are $x$ , when divided by $N$ .

What is the sum of all numbers in the array that have a remainder of $4$ when divided by $6$ ?

1	`[1, 28, 12, 31, 11, 5, 4, 30, 30, 8, 9, 39, 2, 5, 33, 33, 37, 5, 12, 27, 23, 39, 1, 36, 28, 33, 24, 5, 27, 36]`

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Arrays - Basic

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