Given an array nums of distinct integers, return all the possible permutations. You can return the answer in any order.
Question
Given an array nums of distinct integers, return all the possible permutations. You can return the answer in any order.
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Solution 1
Sure, here is a Python solution using recursion and backtracking:
def permute(nums):
def backtrack(first = 0):
# if all integers are used up
if first == n:
output.append(nums[:])
for i in range(first, n):
# place i-th integer first
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