Shivlal Sharma <sshivlal9...@gmail.com> writes: > I have seen this code on one of competative programming site but I > didn't get it, Why output is 9? > > from functools import * > > def ADDS(a,b): > return a+1 > nums = [1, 2, 3, 4, 5, 6, 7, 8, 9] > add = reduce(ADDS, nums) > print(add) > > output: 9
Hint: reduce(f, [e1, e2]) is f(e1, e2) reduce(f, [e1, e2, e3]) is f(f(e1, e2), e3) reduce(f, [e1, e2, e3, e4]) is f(f(f(e1, e2), e3), e4) Replace f with a function that adds one to its first argument. Does that help? -- Ben. -- https://mail.python.org/mailman/listinfo/python-list
