7kyu-balanced-number.js

// Definition

// Balanced number is the number that * The sum of all digits to the left of the middle digit(s) and the sum of all digits to the right of the middle digit(s) are equal*.
// Task

// Given a number, Find if it is Balanced or not .
// Warm-up (Highly recommended)
// Playing With Numbers Series
// Notes

//     If the number has an odd number of digits then there is only one middle digit, e.g. 92645 has middle digit 6; otherwise, there are two middle digits , e.g. 1301 has middle digits 3 and 0

//     The middle digit(s) should not be considered when determining whether a number is balanced or not, e.g 413023 is a balanced number because the left sum and right sum are both 5.

//     Number passed is always Positive .

//     Return the result as String

// Input >> Output Examples

// 1- balancedNum (7) ==> return "Balanced"   .

// Explanation:

//     Since , The sum of all digits to the left of the middle digit (0)

//     and the sum of all digits to the right of the middle digit (0) are equal , then It's Balanced

// 2- balancedNum (295591) ==> return "Not Balanced" .

// Explanation:

//     Since , The sum of all digits to the left of the middle digits (11)

//     and the sum of all digits to the right of the middle digits (10) are equal , then It's Not Balanced

//     Note : The middle digit(s) are 55 .

// 3- balancedNum (959) ==> return "Balanced"  .

// Explanation:

//     Since , The sum of all digits to the left of the middle digits (9)

//     and the sum of all digits to the right of the middle digits (9) are equal , then It's Balanced

//     Note : The middle digit is 5 .

// 4- balancedNum (27102983) ==> return "Not Balanced"  .

// Explanation:

//     Since , The sum of all digits to the left of the middle digits (10)

//     and the sum of all digits to the right of the middle digits (20) are equal , then It's Not Balanced

//     Note : The middle digit(s) are 02 .

// Playing with Numbers Series
// Playing With Lists/Arrays Series
// For More Enjoyable Katas
// ALL translations are welcomed
// Enjoy Learning !!
// Zizou
function balancedNum(number) {
        const stringArray = String(number).split('');
        const numberArray = stringArray.map(value => Number(value));
        let leftSum = 0;
        let rightSum = 0;
        if (numberArray.length === 1 || numberArray.length === 2) {
                return 'Balanced';
        }
        // Math.ceil is for the case when the number is not even
        for (let i = 0; i < Math.ceil(numberArray.length / 2 - 1); i += 1) {
                leftSum += numberArray[i];
                rightSum += numberArray[numberArray.length - (i + 1)];
        }
        if (leftSum === rightSum) {
                return 'Balanced';
        }
        return 'Not Balanced';
}