$lsgreedy-algorithm-example-coin-change-problem.jslongest-common-substring.jsmemoization-top-down-approach.jssolving-knapsack-problem-a-recursive-solution.jssolving-knapsack-problem.jstabulation-bottom-up-approach.js$ls shows the contents of the current directory$ls -ltrtotal 24-rw-rw-r– 1 jeffrin jeffrin 591 Feb 9 21:37 memoization-top-down-approach.js-rw-rw-r– 1 jeffrin jeffrin 436 Feb 9 21:56 tabulation-bottom-up-approach.js-rw-rw-r– 1 jeffrin jeffrin 2133 Feb 16 22:13 longest-common-substring.js-rw-rw-r– 1 jeffrin jeffrin 2288 Feb 18 21:54 solving-knapsack-problem.js-rw-rw-r– 1 jeffrin jeffrin 1303 Feb 19 22:24 solving-knapsack-problem-a-recursive-solution.js-rw-rw-r– 1 jeffrin jeffrin 1366 Feb …