How should I practice Complex Number Class?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Bloomberg LP phone screen problems in FastPrep.

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Complex Number Class

Bloomberg LP● EasyNEW GRADPHONE SCREEN

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Problem statement

Construct two integer complex numbers, add them, compare them for equality, and format them. Return [formattedSum, equality, formattedFirst, formattedSecond].

Formatting omits zero terms, writes coefficient 1 as i and -1 as -i, and uses a + bi or a - bi when both terms are nonzero.

Function

complexNumberSummary(firstReal: int, firstImaginary: int, secondReal: int, secondImaginary: int) → String[]

Examples

Example 1

firstReal = 2firstImaginary = -1secondReal = -2secondImaginary = 1return = ["0","false","2 - i","-2 + i"]

The numbers cancel under addition but are not equal.

Constraints

All parts fit in signed 32-bit integers and their sums do too.