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• Can anyone explain Dash Insert challenge in more detail
I am trying to understand this problem, but by looking test cases, I can't understand what the problem is exactly asking for... Can anyone please help explain this problem? <a href="coderbyte.com/CodingArea/information.php?ct=Dash%20Insert">Dash Insert Challenge</a> Thanks
hdesai posted this question on 10/4/14 |
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• Hello hdesai, The challenge requires that you insert a dash between two CONSECUTIVE odd numbers So in other words if the input number is 8865321398, then you should output the result: 8865-321-3-98. If there are no two consecutive odd numbers then no dashes would be made, e.g 123456789 then result would still be 123456789. Note: We assume that the sequence of numbers are all single digits from 0-9. 0 should be taken as an even number (not odd)/ So basically, you want to loop through the numbers and if digit[i] and digit[i+1] are both odd, then go ahead and insert a dash between digit[i] and digit[i+1]. Otherwise continue the loop without changing anything. Hint: You'll most likely be using .split, .splice and .join array methods to complete this challenge, Hope that helps!
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• Used this exercise to practice recursion... besides it being unnecessary/more difficult to follow, is there any reason this is a bad idea? ``` function DashInsert(str) { let firstNumIndex = str.search(/[13579][13579]/); if(firstNumIndex === -1) return str; let firstNum = str[firstNumIndex]; let secondNum = str[firstNumIndex +1]; str = str.replace(/[13579][13579]/, firstNum + '-' + secondNum); return DashInsert(str); } DashInsert(readline());```
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• I got it...
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• Why are you not putting a dash between the first two nines?
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• Hi Kim, I understand that logic but I couldn't understand this test case : Input = 99946 Output = "9-9-946". According to challenge, it should o/p: 99-946 but how it's giving 9-9-946? Thanks.
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• As mattlarsh pointed out, the first two 9's are consecutive odd numbers and therefore a dash is required between them.