Arrays

Sum of all odd numbers in an array
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Given an array of integers, this function will return the sum of all the odd numbers in the array.

Lowest Positive Missing Integer
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Given an array of integers, this function finds the lowest positive integer that does not exist in the array. The array can contain duplicates and negative numbers.

Maximum Average Value in an Array
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Given an array A of n integers, find the maximum average value for a subarray of given length k.

Array Sum
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This problem asks you to return the sum of all the elements in an array. For example, given the input [1, 2, 3, 4], the output would be 10 (1 + 2 + 3 + 4).

Find First Missing Positive Integer in Array
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Given an array of integers, this function will find the first missing positive integer and return it. The array can contain duplicates and negative numbers.

Find the sum of all elements in an array.
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To find the sum of all elements in an array, simply iterate through the array and add each element to a total sum.

Longest Substring without Repeating Characters
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Given a string, the length of the longest substring without repeating characters is found.

Maximum Sum of Contiguous Subarray of Length K
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Given an array of n integers, find the contiguous subarray of length k with the maximum sum.