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#hexadecimal

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Practice › LeetCode › LeetCode (archived) › LeetCode 08xx ›

LeetCode 800: Similar RGB Color

Problem Restatement We are given a color string in this format: "#ABCDEF" The color has three hexadecimal components: Component Meaning AB Red CD Green EF Blue A color has shorthand form if each component has two equal hexadecimal digits. For example: "#AABBCC" can be written as: "#ABC" because: AA -> A BB -> B CC -> C We need to return a 7-character color string that has shorthand form and...

Practice › LeetCode › LeetCode (archived) › LeetCode 04xx ›

LeetCode 405: Convert a Number to Hexadecimal

Problem Restatement We are given a 32-bit signed integer num . We must return its hexadecimal representation as a lowercase string. The hexadecimal digits are: 0 1 2 3 4 5 6 7 8 9 a b c d e f We must not use built-in conversion functions such as: hex() Negative numbers use two's complement representation. If the number is 0 , return: "0" Input and Output Item Meaning...