#! /usr/bin/node "use strict" // by Frank Tan // https://stackoverflow.com/questions/38400594/javascript-deep-comparison function deepEqual(a,b) { if( (typeof a == 'object' && a != null) && (typeof b == 'object' && b != null) ) { var count = [0,0]; for( var key in a) count[0]++; for( var key in b) count[1]++; if( count[0]-count[1] != 0) {return false;} for( var key in a) { if(!(key in b) || !deepEqual(a[key],b[key])) {return false;} } for( var key in b) { if(!(key in a) || !deepEqual(b[key],a[key])) {return false;} } return true; } else { return a === b; } } function countsmaller(nums) { let b = [...nums]; b.sort(function(a,b) { return a-b; }); let sm = new Map; let l = 0; b.forEach((e, i) => { if (i == 0 || e != l) { sm.set(e, i); l = e; } }); return nums.map(n => sm.get(n)); } if (deepEqual(countsmaller([8, 1, 2, 2, 3]), [4, 0, 1, 1, 3])) { process.stdout.write("Pass"); } else { process.stdout.write("FAIL"); } process.stdout.write(" "); if (deepEqual(countsmaller([6, 5, 4, 8]), [2, 1, 0, 3])) { process.stdout.write("Pass"); } else { process.stdout.write("FAIL"); } process.stdout.write(" "); if (deepEqual(countsmaller([2, 2, 2]), [0, 0, 0])) { process.stdout.write("Pass"); } else { process.stdout.write("FAIL"); } process.stdout.write("\n");