#### Binary To Hex

H
```const pad = (num, padlen) => {
}

const hexLookup = (bin) => {
let binary = bin
if (binary.length < 4) {
}
switch (binary) {
case '0000':
return '0'
case '0001':
return '1'
case '0010':
return '2'
case '0011':
return '3'
case '0100':
return '4'
case '0101':
return '5'
case '0110':
return '6'
case '0111':
return '7'
case '1000':
return '8'
case '1001':
return '9'
case '1010':
return 'A'
case '1011':
return 'B'
case '1100':
return 'C'
case '1101':
return 'D'
case '1110':
return 'E'
case '1111':
return 'F'
}
}
const binaryToHex = (binaryString) => {
/*
Function for converting Binary to Hex

1. The conversion will start from Least Significant Digit (LSB) to the Most Significant Bit (MSB).
2. We divide the bits into sections of 4-bits starting from LSB to MSB.
3. If the MSB get less than 4 bits, then we pad 0s to the front of it.

For Example:
Binary String = '1001101'

1. Divide it to 2 parts => ['100', '1101']
2. Pad 0s the MSB so it'll be => ['0100', '1101']
3. Use the lookup table and merge them, therefore the result is 4D.

*/

let result = ''
binaryString = binaryString.split('')
for (let i = binaryString.length - 1; i >= 0; i = i - 4) {
if (i >= 3) {
result += hexLookup(binaryString.slice(i - 3, i + 1).join(''))
} else {
result += hexLookup(binaryString.slice(0, i + 1).join(''))
}
}
return result.split('').reverse().join('')
}

export default binaryToHex
```