How should I practice Reverse Base36 Number?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Zopsmart online assessment problems in FastPrep.

Is Reverse Base36 Number associated with Zopsmart?

FastPrep tags this as a Zopsmart online assessment coding practice problem when the problem catalog has that company and stage context.

Problem

Reverse Base36 Number

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Problem statement

You are given a non-negative decimal integer n.

Convert n to its uppercase base-36 representation. Reverse that base-36 string, then interpret the reversed string as a base-36 number and return its decimal value.

In base 36, digits 0 through 9 have values 0 through 9, and letters A through Z have values 10 through 35.

Note: if the reversed string has leading zeros, they are ignored when interpreting the reversed string as a base-36 number (e.g., "01" is interpreted as 1).

Function

reverseBase36Number(n: long) → long

Examples

Example 1

n = 100return = 1010

100 in base 36 is 2S. Reversing gives S2, which is 28 * 36 + 2 = 1010.

Example 2

n = 36return = 1

36 in base 36 is 10. Reversing gives 01, whose decimal value is 1.

Constraints

0 <= n <= 10¹²
The returned value fits in a 64-bit signed integer.