not work for more than 5 length number, its not best practice

dose not work for many test case like: 59

by using slice method, the function can be faster. because in your solution, every loop from filter is start from 0 to end

you can just return result from reduce:

return cou.reduce((a, b) => a + b) === 10;

very slow

does not work for 100, 1000, etc.. returns 0, because of initialization of number = 0

can anyone explain to me the purpose of this line in this code
"if (line.indexOf(' ') >= 0)"

i know what is indexof. but not in this code

when i tested this code without that line, it gaves me Timeout

dosent work if: isValidWalk(['n', 'n', 'n', 'n', 'w', 's', 's', 's', 's', 'e'])