From dbadcfe8fa4c38281d2c71089317fd4acf4286e7 Mon Sep 17 00:00:00 2001
From: tomtoto757 <40370369+tomtoto757@users.noreply.github.com>
Date: Wed, 2 Sep 2026 15:11:22 -0700
Subject: [PATCH 1/3] Add Fivetran interview practice problems
---
README.md | 2 ++
1 file changed, 2 insertions(+)
diff --git a/README.md b/README.md
index 518ca9b..de7c8be 100644
--- a/README.md
+++ b/README.md
@@ -1852,6 +1852,8 @@ Please keep it source-safe — no confidential screenshots or full proprietary s
| **Microsoft** | [Skycraper](https://www.fastprep.io/problems/microsoft-skyscraper) | Coding | [![Practice][p]](https://www.fastprep.io/problems/microsoft-skyscraper) | Jun 15, 2024 |
| **Microsoft** | [Min Num Cells](https://www.fastprep.io/problems/microsoft-min-num-letters) | Coding | [![Practice][p]](https://www.fastprep.io/problems/microsoft-min-num-letters) | Jun 15, 2024 |
| **Microsoft** | [Maximum Cells](https://www.fastprep.io/problems/microsoft-maximum-cells) | Coding | [![Practice][p]](https://www.fastprep.io/problems/microsoft-maximum-cells) | Jun 15, 2024 |
+| **Fivetran** | [Unique Near-Equal Target-Sum Pairs](https://www.fastprep.io/problems/fivetran-unique-near-equal-target-sum-pairs) | Coding | [![Practice][p]](https://www.fastprep.io/problems/fivetran-unique-near-equal-target-sum-pairs) | Jun 13, 2024 |
+| **Fivetran** | [Connected Groups](https://www.fastprep.io/problems/fivetran-connected-groups) | Coding | [![Practice][p]](https://www.fastprep.io/problems/fivetran-connected-groups) | Jun 13, 2024 |
| **Anduril** | [Design a Radar Sensor Observation Pipeline](https://www.fastprep.io/system-design/radar-sensor-observation-pipeline) | System design | [![Practice][p]](https://www.fastprep.io/system-design/radar-sensor-observation-pipeline) | Jun 11, 2024 |
| **Amazon** | [Maximize Subtree Product](https://www.fastprep.io/problems/amazon-maximize-subtree-product) | Coding | [![Practice][p]](https://www.fastprep.io/problems/amazon-maximize-subtree-product) | Jun 10, 2024 |
| **Amazon** | [Bring Servers Down](https://www.fastprep.io/problems/amazon-bring-servers-down) | Coding | [![Practice][p]](https://www.fastprep.io/problems/amazon-bring-servers-down) | Jun 10, 2024 |
From 89e932e26161fac294464a19e62bde7770b576fc Mon Sep 17 00:00:00 2001
From: tomtoto757 <40370369+tomtoto757@users.noreply.github.com>
Date: Wed, 2 Sep 2026 15:17:26 -0700
Subject: [PATCH 2/3] Sync generated question format pages
---
README.md | 2 +-
formats/coding.md | 4 +++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/README.md b/README.md
index de7c8be..3b2cd9f 100644
--- a/README.md
+++ b/README.md
@@ -113,7 +113,7 @@ Please keep it source-safe — no confidential screenshots or full proprietary s
Newest updates first · 🔥 added in the last 2 weeks · 🆕 in the last 45 days
-Formats: [Coding (1,768)](formats/coding.md) · [SQL (13)](formats/sql.md) · [System design (258)](formats/system-design.md) · [Low-level design (53)](formats/low-level-design.md) · [AI coding (28)](formats/ai-coding.md)
+Formats: [Coding (1,770)](formats/coding.md) · [SQL (13)](formats/sql.md) · [System design (258)](formats/system-design.md) · [Low-level design (53)](formats/low-level-design.md) · [AI coding (28)](formats/ai-coding.md)
System design, low-level design/OOD, and AI coding rows sync hourly from FastPrep's public, candidate-safe catalogs. Updated uses the latest reported sighting when available, otherwise the first public sync date. Unattributed means no source-backed employer was reported.
diff --git a/formats/coding.md b/formats/coding.md
index f97267b..3d43a36 100644
--- a/formats/coding.md
+++ b/formats/coding.md
@@ -2,7 +2,7 @@
[← Back to all questions](../README.md#question-bank)
-**1,768 questions**
+**1,770 questions**
[p]: ../assets/practice-button.svg
@@ -1400,6 +1400,8 @@
| **Microsoft** | [Skycraper](https://www.fastprep.io/problems/microsoft-skyscraper) | [![Practice][p]](https://www.fastprep.io/problems/microsoft-skyscraper) | Jun 15, 2024 |
| **Microsoft** | [Min Num Cells](https://www.fastprep.io/problems/microsoft-min-num-letters) | [![Practice][p]](https://www.fastprep.io/problems/microsoft-min-num-letters) | Jun 15, 2024 |
| **Microsoft** | [Maximum Cells](https://www.fastprep.io/problems/microsoft-maximum-cells) | [![Practice][p]](https://www.fastprep.io/problems/microsoft-maximum-cells) | Jun 15, 2024 |
+| **Fivetran** | [Unique Near-Equal Target-Sum Pairs](https://www.fastprep.io/problems/fivetran-unique-near-equal-target-sum-pairs) | [![Practice][p]](https://www.fastprep.io/problems/fivetran-unique-near-equal-target-sum-pairs) | Jun 13, 2024 |
+| **Fivetran** | [Connected Groups](https://www.fastprep.io/problems/fivetran-connected-groups) | [![Practice][p]](https://www.fastprep.io/problems/fivetran-connected-groups) | Jun 13, 2024 |
| **Amazon** | [Maximize Subtree Product](https://www.fastprep.io/problems/amazon-maximize-subtree-product) | [![Practice][p]](https://www.fastprep.io/problems/amazon-maximize-subtree-product) | Jun 10, 2024 |
| **Amazon** | [Bring Servers Down](https://www.fastprep.io/problems/amazon-bring-servers-down) | [![Practice][p]](https://www.fastprep.io/problems/amazon-bring-servers-down) | Jun 10, 2024 |
| **Snowflake** | [Search Strings](https://www.fastprep.io/problems/snowflake-get-maximum-removals) | [![Practice][p]](https://www.fastprep.io/problems/snowflake-get-maximum-removals) | Jun 10, 2024 |
From a3afe3ed8193212b2246b1caafee9306a4e3b1ca Mon Sep 17 00:00:00 2001
From: tomtoto757 <40370369+tomtoto757@users.noreply.github.com>
Date: Wed, 2 Sep 2026 16:11:14 -0700
Subject: [PATCH 3/3] Add Fivetran magic carpet problem
---
README.md | 3 ++-
formats/coding.md | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/README.md b/README.md
index 3b2cd9f..f331f8e 100644
--- a/README.md
+++ b/README.md
@@ -113,7 +113,7 @@ Please keep it source-safe — no confidential screenshots or full proprietary s
Newest updates first · 🔥 added in the last 2 weeks · 🆕 in the last 45 days
-Formats: [Coding (1,770)](formats/coding.md) · [SQL (13)](formats/sql.md) · [System design (258)](formats/system-design.md) · [Low-level design (53)](formats/low-level-design.md) · [AI coding (28)](formats/ai-coding.md)
+Formats: [Coding (1,771)](formats/coding.md) · [SQL (13)](formats/sql.md) · [System design (258)](formats/system-design.md) · [Low-level design (53)](formats/low-level-design.md) · [AI coding (28)](formats/ai-coding.md)
System design, low-level design/OOD, and AI coding rows sync hourly from FastPrep's public, candidate-safe catalogs. Updated uses the latest reported sighting when available, otherwise the first public sync date. Unattributed means no source-backed employer was reported.
@@ -1250,6 +1250,7 @@ Please keep it source-safe — no confidential screenshots or full proprietary s
| **PayPay** | [Calculate Change](https://www.fastprep.io/problems/paypay-calculate-change) | Coding | [![Practice][p]](https://www.fastprep.io/problems/paypay-calculate-change) | Jun 18, 2025 |
| **PayPay** | [Find Maximum Two-Digit Fragment](https://www.fastprep.io/problems/paypay-find-maximum-two-digit-fragment) | Coding | [![Practice][p]](https://www.fastprep.io/problems/paypay-find-maximum-two-digit-fragment) | Jun 18, 2025 |
| **Amazon** | [Find Hash](https://www.fastprep.io/problems/amazon-find-hash) | Coding | [![Practice][p]](https://www.fastprep.io/problems/amazon-find-hash) | Jun 12, 2025 |
+| **Fivetran** | [Aladdin and the Magic Carpet](https://www.fastprep.io/problems/fivetran-aladdin-and-the-magic-carpet) | Coding | [![Practice][p]](https://www.fastprep.io/problems/fivetran-aladdin-and-the-magic-carpet) | Jun 12, 2025 |
| **Postman** | [Design a Threaded Comment System with User Tags](https://www.fastprep.io/low-level-design/threaded-comment-system-with-user-tags) | Low-level design | [![Practice][p]](https://www.fastprep.io/low-level-design/threaded-comment-system-with-user-tags) | Jun 07, 2025 |
| **Postman** | [Design an Annotated Comment Thread System](https://www.fastprep.io/low-level-design/annotated-comment-thread-system) | Low-level design | [![Practice][p]](https://www.fastprep.io/low-level-design/annotated-comment-thread-system) | Jun 07, 2025 |
| **Amazon** | [Find Minimum Days](https://www.fastprep.io/problems/amazon-find-minimum-days) | Coding | [![Practice][p]](https://www.fastprep.io/problems/amazon-find-minimum-days) | May 31, 2025 |
diff --git a/formats/coding.md b/formats/coding.md
index 3d43a36..38fb721 100644
--- a/formats/coding.md
+++ b/formats/coding.md
@@ -2,7 +2,7 @@
[← Back to all questions](../README.md#question-bank)
-**1,770 questions**
+**1,771 questions**
[p]: ../assets/practice-button.svg
@@ -812,6 +812,7 @@
| **PayPay** | [Calculate Change](https://www.fastprep.io/problems/paypay-calculate-change) | [![Practice][p]](https://www.fastprep.io/problems/paypay-calculate-change) | Jun 18, 2025 |
| **PayPay** | [Find Maximum Two-Digit Fragment](https://www.fastprep.io/problems/paypay-find-maximum-two-digit-fragment) | [![Practice][p]](https://www.fastprep.io/problems/paypay-find-maximum-two-digit-fragment) | Jun 18, 2025 |
| **Amazon** | [Find Hash](https://www.fastprep.io/problems/amazon-find-hash) | [![Practice][p]](https://www.fastprep.io/problems/amazon-find-hash) | Jun 12, 2025 |
+| **Fivetran** | [Aladdin and the Magic Carpet](https://www.fastprep.io/problems/fivetran-aladdin-and-the-magic-carpet) | [![Practice][p]](https://www.fastprep.io/problems/fivetran-aladdin-and-the-magic-carpet) | Jun 12, 2025 |
| **Amazon** | [Find Minimum Days](https://www.fastprep.io/problems/amazon-find-minimum-days) | [![Practice][p]](https://www.fastprep.io/problems/amazon-find-minimum-days) | May 31, 2025 |
| **Amazon** | [Split Prefix Suffix](https://www.fastprep.io/problems/amazon-split-prefix-suffix) | [![Practice][p]](https://www.fastprep.io/problems/amazon-split-prefix-suffix) | May 31, 2025 |
| **Amazon** | [Find Minimum Machine Sizes](https://www.fastprep.io/problems/amazon-find-minimum-machines-size) | [![Practice][p]](https://www.fastprep.io/problems/amazon-find-minimum-machines-size) | May 31, 2025 |