<qiyuangong>046_Permutations_1.py
def permute( nums):
    res = [[]]
    for i in range(len(nums)):
        cache = set()
        while len(res[0]) == i:
            curr = res.pop(0)
            for j in range(len(curr) + 1):
                
                new_perm = curr[:j] + [nums[i]] + curr[j:]
                stemp = ''.join(map(str, new_perm))
                if stemp not in cache:
                    cache.add(stemp)
                    res.append(new_perm)
    return res
def sample_funcname ( var_0 ) :
    var_1 = [ [ ] ]
    for var_4 in range ( len ( var_0 ) ) :
        var_6 = set ( )
        while len ( var_1 [ 0 ] ) == var_4 :
            var_9 = var_1.pop ( 0 )
            for var_11 in range ( len ( var_9 ) + 1 ) :
                var_12 = var_9 [ : var_11 ] + [ var_0 [ var_4 ] ] + var_9 [ var_11 : ]
                var_17 = ''.join ( map ( str , var_12 ) )
                if var_17 not in var_6 :
                    var_6.add ( var_17 )
                    var_1.append ( var_12 )
    return var_1
