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  1. process.stdin.resume();
  2. process.stdin.setEncoding('utf8');
  3.  
  4. function countNumber(num) {
  5.   let count = 0;
  6.   while (num > 0) {
  7.     const digit = num % 10;
  8.     // if (digit === 6) {
  9.     if (digit === 3 || digit === 6|| digit === 9) {
  10.       count++;
  11.     }
  12.     num = Math.floor(num / 10);
  13.   }
  14.   return count;
  15. }
  16.  
  17.  
  18. function countInRange(first, last){
  19.     let count = 0;
  20.     for(let i = first; i< last; i++){
  21.         count+=countNumber(i)
  22.     }
  23.     return count
  24. }
  25.  
  26. var remainder = ''
  27. process.stdin.on('data', function (chunk) {
  28. 	const input = chunk.toString().split(' ')
  29. 	console.log(input[0], input[1])
  30. 	const result = countInRange(Number(input[0]), Number(input[1]))
  31. 	console.log(result)
  32. });
Success #stdin #stdout 0.86s 37728KB
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stdin
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1 10000000
stdout
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1 10000000
21000000
https://ideone.com/Hty6mw
language:
Node.js (node 11.12.0)
created:
14 days ago
visibility:
public

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