Compute and generate a compressed string for a given string containing repetitions

For a given string return a compressed string which replaces all the repetitions of the characters with their counts. If the compressed string is not smaller than the initial string return the original string as it is. For example, if the input string is "aabbbbbcccdddeef", then the resultant string should be "a2b5c3d3e2f1", whereas if the input string is "abcdef" then the output should be "abcdef".

Find all the pairs in a given ordered set of numbers whose sum is equal to a given input sum

In this problem, we will be given a sorted set of numbers and a number, we need to print all the pairs available in the set whose sum is equal to the given number. For example, if we are given a set of numbers [1,2,5,6,7, 9,11,48,64, 84] and the sum is 8 - the output should be 1,7 2,6 since these are the only "pairs" of numbers which produce the given sum 8 among the numbers in the set.

Find all the pairs in a given unordered set of numbers whose sum is equal to a given input sum

In this problem, we will be given an unordered set of numbers and a number, we need to print all the pairs available in the set whose sum is equal to the given number. For example, if we are given a set of numbers [1, 2, 4, 8, 11, 9, 23, 5, 5, 6] and the sum is 10 - the output should be 8,2 9,1 5,5 6,4 since these are the only "pairs" of numbers which produce the given sum 10 among the numbers in the set.

Sort the given unordered set of Binary digits

In this problem, we shall be given an unordered set of binary digits (0s and 1s) and we are expected to sort all the digits into ascending order. For example, If the given array of digits are [1,0,1,1,0,0,1,1,1,1] the output should be [0,0,0,1,1,1,1,1,1,1].