Question

How to find all the armstrong numbers in the range of 0 and 999 in JavaScript

Answer 1

// An Armstrong number of three digits is an integer that the sum 
// of the cubes of its digits is equal to the number itself
   
// 371 is an Armstrong number: 3**3 + 7**3 + 1**3 = 371

function find_all_armstrong_numbers_in_range(srart, end) {
    for (let n = 0; n <= 999; n++) {
        let tmp = n;
        let sum = 0;
        let reminder = 0;
               
        while (tmp != 0) {
            reminder = tmp % 10;
            tmp = Math.floor(tmp / 10);
            sum = sum + (reminder * reminder * reminder);
        }
        
        if (sum == n) {
            console.log(n);
        }
    }
}
   
find_all_armstrong_numbers_in_range(0, 999);



 
/*
run:
  
0
1
153
370
371
407
   
*/

 

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