21 lines
412 B
JavaScript
21 lines
412 B
JavaScript
const sumAll = function(from, to) {
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let sum = 0;
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if(from > to){
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[from, to] = [to, from];
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}
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if(from < 0 || to < 0){
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return "ERROR";
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}
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if(!Number.isInteger(from) || !Number.isInteger(to)){
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return "ERROR";
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}
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for(from; from <= to; from++){
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sum += from;
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}
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return sum;
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};
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// Do not edit below this line
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module.exports = sumAll;
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