/***************************************************************************************

* *

* CODERBYTE BEGINNER CHALLENGE *

* *

* Dash Insert *

* Using the JavaScript language, have the function DashInsert(str) insert dashes *

* ('-') between each two odd numbers in str. For example: if str is 454793 the *

* output should be 4547-9-3. Don't count zero as an odd number. *

* *

* SOLUTION *

* I am going to loop through each number in the string. Test if number is odd using *

* modulus. If odd then check if next number is also odd. I have two odd numbers then *

* insert dash into the string.

* *

* Steps for solution *

* 1) Initialize idx to zero since using this as our counter *

* 2) Use While loop to loop thru string since we will be adding dashes to it *

* 3) If currrent character is odd and so is next character then insert dash *

* 4) return modified string as answer *

* *

***************************************************************************************/

function DashInsert(str) {

var idx = 0;

while (idx < str.length-1) {

if (Number(str[idx]) % 2 === 1 && Number(str[idx+1]) % 2 === 1) {

str = str.slice(0,idx+1) + "-" + str.slice(idx+1);

idx = idx + 2;

}

else {

idx++;

}

}

return str;

}