# Simple solution for Sum All Numbers in a Range challenge

Simple solution for Sum All Numbers in a Range challenge
0

#1

Here’s my solution for this challenge:

function sumAll(arr) {

var myArray = arr;

maxValue = Math.max.apply(null, myArray);

minValue = Math.min.apply(null, myArray);

var newArray = Array();

newArray.push(minValue, maxValue);

var ourTotal = 0;

for (var i = minValue; i <= maxValue; i++){

ourTotal += newArray[0]++;

}

return ourTotal;
}

sumAll([1, 4]);

#2

function sumAll(arr) {

// var myArray = arr;  // this line not needed

maxValue = Math.max.apply(null, arr); // use the original array (arr)

minValue = Math.min.apply(null, arr);  // use the original array (arr)

// var newArray = Array(); // this line not needed

// newArray.push(minValue, maxValue); // this line not needed

var ourTotal = 0;

for (var i = minValue; i <= maxValue; i++){

ourTotal += i;  // changed newArray[0] to i

}

return ourTotal;
}

sumAll([1, 4]);

#3

Hi. thanks, forgot to clean up the code before i pasted it here.

#4

This is how I do it.

function sumOf(min, max) {
return (max-min+1) * (min+max) / 2;
}

function sumAll(arr) {
return sumOf(Math.min.apply(null,arr), Math.max.apply(null,arr));
}