SyntaxLab

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Livecollab

solution.py

utils.js

README.md

def binary_search(arr, target):
    Sarah
    lo, hi = 0, len(arr) - 1
    while lo <= hi:
        mid = (lo + hi) // 2
        if arr[mid] == target:
            return mid
        elif arr[mid] < target:
            lo = mid + 1
        else:
            hi = mid - 1
    return -1

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Python 3.12

Ln 3, Col 28 · UTF-8

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Suggestion

hi = mid - 1

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solution.py

while lo <= hi:

mid = (lo + hi) // 2

...

2 collaborators editing

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Python

Rust

TypeScript

JavaScript

Java

Swift

Kotlin

Haskell

Ruby

PHP

C++

Scala

Dart

Elixir

Lua

Bash

Clojure

Erlang

Julia

Perl

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An AI that
sees your output

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solution.py — AI Assistant

def binary_search(arr, target):
lo, hi = 0, len(arr) - 1
while lo < hi:
Output
IndexError: list index out of range
  at line 8, in binary_search
AI Analysis
The while loop exits before checking the last element. Your hi boundary is off by one when the array has an even length.
- while lo < hi:
+ while lo <= hi:

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