submission.js

const findSum = function(array) {
    let total = 0;
    
    for (let value of array) {
        total += value;
    }

return total;
}






const findFrequency = function(array) {

    const obj = {};
    let max = 0;
    let min = 0;
    let mostFreq = null;
    let leastFreq = null;
    
        for (let i=0; i < array.length; i++) {
            let letter = array[i];
            
            if (obj[letter]) {
                obj[letter]++;
            } else {
                obj[letter] = 1;
            }
        }
        for (let x in obj) {
            if (obj[x] > max){
                max = obj[x];
                mostFreq = x;
            }
            
        }

        for (let x in obj) {
            if (obj[x] < max) {
                min = obj[x];
                leastFreq = x;
            }
        }
        
        return {
            'most': mostFreq,
            'least': leastFreq
        };
        
    }






const isPalindrome = function(str) {

  var smallStr = str.toLowerCase();
  
  var reversed = smallStr.split("").reverse().join("");

  if (reversed === smallStr) return true;
  return false
}





const largestPair = function(array) {
    let largestProduct = array[0] * array[1];
    let i;

    for (i = 0; i < array.length; i++) {
        if ((array[i] * array[i+1]) > largestProduct) {
            largestProduct = array[i] * array[i+1]   
        }
    }
    return largestProduct;

}





const removeParenth = function(str) {
    let newPhrase = str.replace("(","").replace(")","");
    
    return newPhrase;
}





const scoreScrabble = function(str) {
    let scoreBoard = {a:1, e:1, i:1, o:1, u:1, l:1, n:1, r:1, s:1, t:1, d:2, g:2, b:3, c:3, m:3, p:3, f:4, h:4, v:4, w:4, y:4, k:5, j:8, x:8, q:10, z:10}, wordScore = 0, i;
    
    for (i = 0; i < str.length; i++) {
        wordScore += scoreBoard[str[i]];
    }
    return wordScore;
}