/**
* Generate N random integers, each with distinct digits and exact length L.
* @param {number} N - How many numbers to generate.
* @param {number} L - Exact length of each number.
* @returns {number[]} Array of generated integers.
*/
function generateDistinctDigitNumbers(N, L) {
const results = new Set(); // Use Set to avoid duplicates
while (results.size < N) {
// Generate a random number with exactly L digits
const min = Math.pow(10, L - 1); // Smallest L‑digit number
const max = Math.pow(10, L) - 1; // Largest L‑digit number
const num = Math.floor(Math.random() * (max - min + 1)) + min;
// Convert number to string to check digits
const digits = num.toString();
// Check if all digits are distinct using a Set
const digitSet = new Set(digits);
if (digitSet.size === digits.length) {
results.add(num); // Add only if digits are unique
}
}
return Array.from(results);
}
// Usage:
console.log(generateDistinctDigitNumbers(10, 6));
/*
run:
[
312504, 723649,
102576, 298074,
253684, 932670,
523046, 361824,
194670, 358260
]
*/
