Sum array of the increment of input values

Question

I'm trying to write a sum array function that takes two input values. The first input value is added incrementally until it reaches the value of the second input. For example if the lowerLimit is '2' and the upperLimit is '5' the total sum would be 2 + (2+1) + (2+2) + (2+3) + (2+4) + (2+5) = 27. I've tried using the variable 'i' that is added to the lowerLimit and goes up incrementally until (i <= (upperLimit - lowerLimit) but I'm unsure of how to do write the sum array, or if a sum array is even the best way to approach this. Thanks for your help.

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    <script>
        $(document).ready(function () {
            var lowerLimit = 0;
            var upperLimit = 0;

            function range(lowerLimit, upperLimit){
                var lowerLimit = parseInt(prompt("What number would you like to being with?"));
                if (isNaN(lowerLimit)) {
                    alert("That's not a number, please retry.");
                    var lowerLimit = prompt("Please re-enter a number.");
                }
                var upperLimit = parseInt(prompt("What number would you like to end with?"));
                if (isNaN(upperLimit)) {
                    alert("That's not a number, please retry.");
                    var upperLimit = prompt("Please re-enter a number.");
                }

             /*    var arr = [upperLimit, lowerLimit, i];
                for(i = 1; i <= (upperLimit - lowerLimit); i++){
                var equation = lowerLimit + (lowerLimit+i);

                }*/


            //ends function
            }
            //ends document ready function
        });
    </script>

Tagged Python. Did you mean javascript?

user707650
– user707650

2016-02-24 02:44:50 +00:00
Commented Feb 24, 2016 at 2:44 — user707650
– user707650, Commented Feb 24, 2016 at 2:44
@Evert yes, I meant this to be a javascript question

fasteddie
– fasteddie

2016-02-24 18:45:35 +00:00
Commented Feb 24, 2016 at 18:45 — fasteddie
– fasteddie, Commented Feb 24, 2016 at 18:45

supraja · Accepted Answer · 2016-02-26 01:35:42Z

1

what is use of arrays? You can directly add them and give output without using arrays...

try this code:

var sum=lowerLimit; for(i=1; i<=upperLimit; i++){ sum += (lowerLimit+i); }

edited Feb 26, 2016 at 1:35

answered Feb 24, 2016 at 18:56

supraja

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3 Comments

fasteddie Over a year ago

thanks for the help, that does make it a lot easier. I've added this since i starts at a value of 'for(i=1; i<= (upperLimit + 1); i++){ sum = lowerLimit + (lowerLimit+i); }' So when lowerLimit = 1 and upperLimit = 3 the sum (1+2+3) = 6. However when lowerLimit = 1 and upperLimit = 4 the sum = 7 even though it should equal 10 (1+2+3+4).

supraja Over a year ago

sorry there was a small mistake in code... it should be 'sum += lowerLimit + (lowerLimit+i);'

fasteddie Over a year ago

Thanks a lot for your help. I edited the parameter on i to i<=(upperLimit - lowerLimit) and the function works as needed. I appreciate the help.

xpy · Accepted Answer · 2016-02-25 08:14:32Z

0

sorry there is a mistake in that code

var sum=lowerlimit;
for(i=1; i<=upperLimit; i++){
  sum += (lowerLimit+i);
}

edited Feb 25, 2016 at 8:14

xpy

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answered Feb 25, 2016 at 4:38

supraja

264 bronze badges

1 Comment

fasteddie Over a year ago

@xpy Thanks a lot guys for your help. I edited the parameter on i to i<=(upperLimit - lowerLimit) and the function works as needed. Thanks again.

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