happyNumber
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function happyNumber(num) {
var a, b ;
var c = [ ];
while(num != 1 && c[num] !== true)
{
c[num] = true ;
a = 0 ;
while (num > 0) {
b = num % 10 ;
a += b * b ;
num = (num - b) / 10 ;
}
num = a ;
}
return (num == 1) ;
}
var count = 5;
var num = 1;
var f5 = '';
while(count-- > 0)
{
while(!happyNumber(num))
num++ ;
f5 = f5+(num + "\n") ;
num++ ;
}
console.log(f5);
JavaScript
INFO