“Python Binärsuche” Code-Antworten

iterative binäre Suche Python

def binary_search(a, key):
	low = 0
	high = len(a) - 1
	while low < high:
		mid = (low + high) // 2
		if key == a[mid]:
			return True
		elif key < mid:
			high = mid - 1
		else:
			low = mid + 1

	return False
webdevjaz

Python Binärsuche

def binary_search(arr, item):
	first = 0
	last = len(arr) - 1
	while(first <= last):
		mid = (first + last) // 2
		if arr[mid] == item :
			return True
		elif item < arr[mid]:
			last = mid - 1
		else:
			first = mid + 1	
	return False
Wrong Whale

Binär -Suche Python

#the best binary search you'll ever witness

def binary_search(arr, target):
    mid = arr[len(arr)//2]
    if mid == target:
        return True
    if len(arr) == 1 and mid != target:
        return False
    if mid < target:
        return binary_search(arr[len(arr)//2: len(arr)], target)
    else:
        return binary_search(arr[0:len(arr)//2], target)
Busy Bison

Python Binärsuche

#blog.icodes.tech
def binary_search(item,my_list):
    found=False
    first=0
    last=len(my_list)-1
    while first <=last and found==False:
        midpoint=(first+last)//2
        if my_list[midpoint]==item:
            found=True
        else:
            if my_list[midpoint]<item:
                first=midpoint+1
            else:
                last=midpoint-1
    return found
Fancy Fly

Python Binärsuche

def binary_search(l : list, z : int) -> int: # z = the value being searched
	front = 0
	rear = len(l) - 1
	mid = (front + rear) // 2
	while front <= rear and l[mid] != z:
    	if l[mid] > z:
        	rear = mid - 1
    	else:
        	front = mid + 1
    	mid = (front + rear) // 2
	return mid if l[mid] == z else -1
Magic Thanos

Binär -Suche Python

# This is real binary search
# this algorithm works very good because it is recursive

def binarySearch(arr, min, max, x):
    if max >= min:
        i = int(min + (max - min) / 2) # average
        if arr[i] == x:
            return i
        elif arr[i] < x:
            return binarySearch(arr, i + 1, max, x)
        else:
            return binarySearch(arr, min, i - 1, x)
Solo developer

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