AlgoDaily - Next Permutation - Next Permutation

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var ob1;
​
class LinearApproach{
  nextPermutation(nums) {
    // write your code here
    return nums;
  }
​
}
function tests() {
    ob1 = new LinearApproach();
    var assert = require('assert').strict;
    let pass = 0;
​
    try {
        assert.deepStrictEqual(ob1.nextPermutation([1,2,3]), [1,3,2]);
        console.log( 'Test1 - PASSED ');
        pass += 1;
    } catch (err) {
        console.log(err);
    }
​
    try {
        assert.deepStrictEqual(ob1.nextPermutation([1, 2, 5, 4, 3]), [ 1, 3, 2, 4, 5 ]);
        console.log( 'Test2 - PASSED' );
        pass += 1;
    } catch (err) {

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