Big O(n^2)

// Big O n^2 
const box1 = ['m','i','t','h','u']

function insertInThem(array) {
    for(let i = 0; i < array.length; i++){
        for(let j = 0; j < array.length; j++){
            console.log("insert " + array[i] + " in " + array[j] )
        }
    }
}

insertInThem(box1)