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  1. process.stdin.resume();
  2. process.stdin.setEncoding('utf8');
  3.  
  4. // your code goes here
  5. let str = "1905" ;
  6. let obj = {
  7. 	0 : [] ,
  8. 	1 : [] ,
  9. 	2 : ["a","b","c"] ,
  10. 	3 : ["d","e","f"] ,
  11. 	4 : ["g","h","i"] ,
  12. 	5 : ["j","k","l"] ,
  13. 	6 : ["m","n","o"] ,
  14. 	7 : ["p","q","r","s"] ,
  15. 	8 : ["t","u","v"] ,
  16. 	9 : ["w","x","y","z"]
  17. }
  18.  
  19. String.prototype.replaceAt = function(index, replacement) {
  20.     return this.substr(0, index) + replacement + this.substr(index + replacement.length);
  21. }
  22.  
  23. function phoneNumberMnemonics(phoneNumber) {
  24.   // Write your code here.
  25.   let allMnemoics = [] ;
  26.   generatingMnemoics(phoneNumber, 0, allMnemoics) ;
  27.   return allMnemoics ;
  28. }
  29.  
  30. function generatingMnemoics(phoneNumber, index, allMnemoics) {
  31. 	if (index === phoneNumber.length) {
  32. 		allMnemoics.push(phoneNumber) ;
  33. 		return ;
  34. 	}
  35. 	let i = index ;
  36. 	//for(let i=index; i<phoneNumber.length; i++ ) {
  37. 	if (obj[parseInt(phoneNumber[i])].length) {
  38. 		for(let j=0; j<obj[parseInt(phoneNumber[i])].length ; j++ ) {
  39. 			let curStr = phoneNumber[i] ;
  40. 			//console.log("First ",phoneNumber, curStr, obj[parseInt(phoneNumber[i])][j]) ;
  41. 			phoneNumber = phoneNumber.replaceAt(i, obj[parseInt(phoneNumber[i])][j] ) ;
  42. 			generatingMnemoics(phoneNumber, i+1, allMnemoics) ;
  43. 			let x = phoneNumber ;
  44. 			phoneNumber = phoneNumber.replaceAt(i, curStr) ;
  45.  
  46. 		}
  47. 	}
  48. 	else {
  49. 		generatingMnemoics(phoneNumber, i+1, allMnemoics) ;
  50. 	}
  51. 	//}
  52. }
  53.  
  54. console.log(phoneNumberMnemonics(str)) ;
Success #stdin #stdout 0.08s 36356KB
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stdin
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Standard input is empty
stdout
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[ '1w0j',
  '1w0k',
  '1w0l',
  '1x0j',
  '1x0k',
  '1x0l',
  '1y0j',
  '1y0k',
  '1y0l',
  '1z0j',
  '1z0k',
  '1z0l' ]
https://ideone.com/liqpOy
language:
Node.js (node 11.12.0)
created:
2 years ago
visibility:
public

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