Question

How to generate all unique 2-digit permutations from a given 3-digit number in Node.js

Answer 1

const generate_2_digit_permutations_from_3_digit_number = (threeDigitNumber) => {
    const twoDigitPermutations = new Set();
 
    // Generate all two_digit_permutations of three_digit_number
    for (let i = 0; i < threeDigitNumber.length; i++) {
        for (let j = 0; j < threeDigitNumber.length; j++) {
            if (i !== j) {
                twoDigitPermutations.add(`${threeDigitNumber[i]}${threeDigitNumber[j]}`);
            }
        }
    }
 
    return twoDigitPermutations;
};
 
const threeDigitNumber = '185';
 
const twoDigitPermutations = generate_2_digit_permutations_from_3_digit_number(threeDigitNumber);
 
console.log(twoDigitPermutations);
 
  
  
  
/*
run:
  
Set(6) { '18', '15', '81', '85', '51', '58' }
  
*/

 

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