Exercises

• Convert array to matrix
• Count specific values in array
• Check if array contains items from another array
• Create new list of unique items
• Get even elements
• Get elements with even index
• Hyphenate and lowercase words from array
• Merge objects into one
• Make new array sorted by number of "a"
• Make new array of values where multiples of 10 go first
• Sort array of arrays
• Sort items by 2 properties
• Switch places of 2 values in a new array
• Switch places of 2 values in a new array