largest subbarray with given sum code example
Example: find longest subarray by sum
def max_length(s, k):
current = []
max_len = -1 # returns -1 if there is no subsequence that adds up to k.
for i in s:
current.append(i)
while sum(current) > k: # Shrink the array from the left, until the sum is <= k.
current = current[1:]
if sum(current) == k:
max_len = max(max_len, len(current))
return max_len