Like the base−2 representation (binary), where we repeatedly divide the base 10 (decimal) numbers by 2, in the base 7 system we will repeatedly divide the number by 7 to find the binary representation.
We are required to write a JavaScript function that takes in any number and finds its base 7 representation.
For example −
base7(100) = 202
Example
The code for this will be −
const num = 100; const base7 = (num = 0) => { let sign = num < 0 && '−' || ''; num = num * (sign + 1); let result = ''; while (num) { result = num % 7 + result; num = num / 7 ^ 0; }; return sign + result || "0"; }; console.log(base7(num));
Output
And the output in the console will be −
202