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31 lines
609 B
JavaScript
31 lines
609 B
JavaScript
function happy_number(num)
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{
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var m, n ;
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var c = [] ;
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while(num != 1 && c[num] !== true)
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{
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c[num] = true ;
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m = 0 ;
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while (num > 0) {
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n = num % 10 ;
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m += n * n ;
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num = (num - n) / 10 ;
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}
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num = m ;
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}
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return (num == 1) ;
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}
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var cnt = 5;
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var num = 1;
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var f5 = '';
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while(cnt-- > 0)
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{
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while(!happy_number(num))
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num++ ;
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f5 = f5+(num + ", ") ;
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num++ ;
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}
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console.log('First 5 happy numbers are : '+f5);
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