My code works for some input but for an input like this: ('This'+ 'painting'+ '1845 and 1910') I get an error: AssertionError 7 == 8. I can solve it using regular expression but I don't know what I'm doing wrong in this. Thanks for answering.
import assert from "assert";
function countDigits(text){
let num = text.split('');
let sum = 0;
for (let i=0; i<num.length; i++){
if (Number(num[i])) {
sum += 1;}}
return sum
}
assert.equal(countDigits('This'
+ 'painting'
+ '1845 and 1910'), 8);
Number(num[i]) will include "0" conversion to a number but in Javascript's if condition, it will be falsy
if(Number("0")) {
console.log('true') //you're expecting this because it's a number
} else {
console.log('false') //but in fact, it returns this because 0 is falsy
}In that case, I'd suggest you use isNaN(num[i])
function countDigits(text) {
let num = text.split('');
let sum = 0;
for (let i = 0; i < num.length; i++) {
//num[i] = " " will be considered a number, so we need to check it as well
if (num[i] !== " " && !isNaN(num[i])) {
sum += 1;
}
}
return sum
}
console.log(countDigits('This' +
'painting' +
'1845 and 1910'))