Ruby - count identical elements in array, add up, and print
135672
duplicates in 2 dimensional array
85352
Couting occurrences of each value in an array
51516
How to return a part of an array in Ruby?
18387
How do I remove duplicate items from an array in Perl?
1710
How to find the sum of an array of numbers
66761
Is it costly to do array.length or list.count in a loop
81636
diff a ruby string or array
1050
Counting inversions in an array
105027
Can you append to specific elements in an array based on if statement conditions?
137138
How to check if an array element exists?
72934
Finding out current index in EACH loop (Ruby)
74711
Java: Checking equality of arrays (order doesn't matter)
93925
How to create an array of unique elements from a string/array in bash?
95169
How can I multiply each item in an array easily with PHP?
17626
Algorithm: efficient way to remove duplicate integers from an array
132228
How to count the frequency of the elements in an unordered list?
34005
How do I find the length of an array?