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I'm trying to write a script that prompts the user for a string containing numbers separated by spaces, and then alerts the minimum value, maximum value, and the sum.

Here is what I have so far:

var prompt = (“Enter a string containing numbers separated by spaces”);

I'm trying to write a script that prompts the user for a string containing numbers separated by spaces, and then alerts the minimum value, maximum value, and the sum.

Here is what I have so far:

var prompt = (“Enter a string containing numbers separated by spaces”);

• javascript

Share Improve this question Follow edited Oct 16, 2012 at 2:16 coderabbi 2,3011616 silver badges1818 bronze badges asked Oct 16, 2012 at 1:58 tonkatonka 111 silver badge11 bronze badge 3

• What, specifically, is your question? – Terry Commented Oct 16, 2012 at 2:02
• 2 Careful with those curly quotes, you want to use regular quotes "". Writing code in a word processor is not a good idea, use a text editor. – elclanrs Commented Oct 16, 2012 at 2:05
• how do i alert the code to get the min value, max value, and sum? should i use the split operation? – tonka Commented Oct 16, 2012 at 2:07

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 2

var input = prompt('Enter a string containing numbers separated by spaces').split(' ');
var min = Math.min.apply(Math, input);
var max = Math.max.apply(Math, input);
var sum = 0;
for(var i=0; i<input.length; i++){ 
    var n = parseFloat(input[i], 10); // depending on expected input
    sum += n ? n : 0;  // add if number
}

alert('min: '+min+'\nmax: '+max+'\nsum: '+sum);

==> jsfiddle

Edit:

---

If you are not sure that only valid input is given you have to check the array manually instead of using Math.min and Math.max, wich could result in NaN

// Some variables we'll be using​
var numbers = "", arr, min, max, sum = 0;

// Don't let them pass without valid input
while ( ! numbers.test(/^(\d+\s?)+$/) ) {
    numbers = prompt( "Enter some numbers, separated by spaces." );
}

// Determine min, max, and the sum
arr = numbers.split(" ");
​min = Math.min.apply(null, arr);
max = Math.max.apply(null, arr);

for ( var i = 0; i < arr.length; i++ ) {
    sum += (+arr[i]);
}

// Output results into console
console.log( min, max, sum );

Fiddle: http://jsfiddle/GUcgj/

var input = prompt("Enter a string containing numbers separated by spaces");​
var ary = input.split(" ");

This would load the input into the array ary. However, you'd need to trim any white space and check for proper input before doing any further processing.

I'm trying to write a script that prompts the user for a string containing numbers separated by spaces, and then alerts the minimum value, maximum value, and the sum.

Here is what I have so far:

var prompt = (“Enter a string containing numbers separated by spaces”);

I'm trying to write a script that prompts the user for a string containing numbers separated by spaces, and then alerts the minimum value, maximum value, and the sum.

Here is what I have so far:

var prompt = (“Enter a string containing numbers separated by spaces”);

• javascript

Share Improve this question Follow edited Oct 16, 2012 at 2:16 coderabbi 2,3011616 silver badges1818 bronze badges asked Oct 16, 2012 at 1:58 tonkatonka 111 silver badge11 bronze badge 3

• What, specifically, is your question? – Terry Commented Oct 16, 2012 at 2:02
• 2 Careful with those curly quotes, you want to use regular quotes "". Writing code in a word processor is not a good idea, use a text editor. – elclanrs Commented Oct 16, 2012 at 2:05
• how do i alert the code to get the min value, max value, and sum? should i use the split operation? – tonka Commented Oct 16, 2012 at 2:07

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 2

var input = prompt('Enter a string containing numbers separated by spaces').split(' ');
var min = Math.min.apply(Math, input);
var max = Math.max.apply(Math, input);
var sum = 0;
for(var i=0; i<input.length; i++){ 
    var n = parseFloat(input[i], 10); // depending on expected input
    sum += n ? n : 0;  // add if number
}

alert('min: '+min+'\nmax: '+max+'\nsum: '+sum);

==> jsfiddle

Edit:

---

If you are not sure that only valid input is given you have to check the array manually instead of using Math.min and Math.max, wich could result in NaN

// Some variables we'll be using​
var numbers = "", arr, min, max, sum = 0;

// Don't let them pass without valid input
while ( ! numbers.test(/^(\d+\s?)+$/) ) {
    numbers = prompt( "Enter some numbers, separated by spaces." );
}

// Determine min, max, and the sum
arr = numbers.split(" ");
​min = Math.min.apply(null, arr);
max = Math.max.apply(null, arr);

for ( var i = 0; i < arr.length; i++ ) {
    sum += (+arr[i]);
}

// Output results into console
console.log( min, max, sum );

Fiddle: http://jsfiddle/GUcgj/

var input = prompt("Enter a string containing numbers separated by spaces");​
var ary = input.split(" ");

This would load the input into the array ary. However, you'd need to trim any white space and check for proper input before doing any further processing.

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