docs(array): add LC-1365 How Many Numbers Are Smaller Than the Current Number documentation

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Prad Nukala
2026-07-12 19:59:11 -04:00
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commit 8ab04b153f
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---
title: LC-1365
description: How Many Numbers Are Smaller Than the Current Number
---
## Examples
| Input | Output |
| ---------------- | -------------------- |
| `[8,1,2,2,3]` | `[4,0,1,1,3]` |
| `[6,5,4,8]` | `[2,1,0,3]` |
| `[7,7,7,7]` | `[0,0,0,0]` |
## Hints
<Accordions type="single">
<Accordion title="Constraints">
Constraints:
- 2 <= `nums.length` <= 500
- 0 <= `nums[i]` <= 100
</Accordion>
<Accordion title="Problem Statement">
Given the array nums, for each `nums[i]` find out how many numbers in the array are smaller than it.
That is, for each `nums[i]` you have to count the number of valid `j`'s such that `j != i` and `nums[j] < nums[i]`.
</Accordion>
</Accordions>
## Solution
```js
/**
* @param {number[]} nums
* @return {number[]}
*/
var smallerNumbersThanCurrent = function (nums) {
// Default for Hammer
const freq = {};
for (let n of nums) freq[n] = (freq[n] || 0) + 1;
const sorted = Object.keys(freq).sort((a, b) => a - b);
// Problem Specific
let count = 0;
let smaller = {};
// Iterate over sorted.
for (let num of sorted) {
smaller[num] = count;
count += freq[num];
}
// Map output
return nums.map((n) => smaller[n]);
};
```
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--- ---
title: Introduction title: Introduction
description: Prad's Random CS Notes description: Prad's Random Leetcode Notes
--- ---
## Overview ## Overview
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---
title: LC-1365
description: How Many Numbers Are Smaller Than the Current Number
---
## OverviewProblem solving guide for Technical Interviews
Given the array nums, for each nums[i] find out how many numbers in the array are smaller than it. That is, for each nums[i] you have to count the number of valid j's such that j != i and nums[j] < nums[i].
### Examples
| Control | Purpose | Default |
| ------------------ | --------------------- | -------- |
| `--typeset-size` | Base text size | `1em` |
| `--typeset-leading`| Line height | `1.75` |
| `--typeset-flow` | Space between blocks | `1.25em` |
### Constraints