Smallest Transform

Published by supafly in
arraysscope

Create a function that returns the smallest number of changes it takes to transform one number into one with identical digits. A step is incrementing or decrementing a digit by one.

Examples

SmallestTransform(399) ➞ 6
// 399 transformed to 999 in 6 steps.

SmallestTransform(1234) ➞ 4
// 1234 can be transformed to either 2222 or 3333 using 4 steps.

SmallestTransform(153) ➞ 4

SmallestTransform(33338) ➞ 5

SmallestTransform(7777) ➞ 0

Notes

If a number already has identical digits, return 0.

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