Intermediate·Concept·2 min read

Binary search and greedy in Python

Practice this question
Python
def binary_search(arr, target):
    left, right = 0, len(arr) - 1
    while left <= right:
        mid = (left + right) // 2
        if arr[mid] == target:
            return mid
        if arr[mid] < target:
            left = mid + 1
        else:
            right = mid - 1
    return -1

Greedy examples

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Adapted from 18_DSA_PYTHON.md · “11. Binary search and greedy in Python”. Code examples are study fragments. Difficulty and core labels are editorial estimates; version-specific behavior should be checked against your project.