20/08/07 13:43:57.69 uQ4nbdFf.net
>>226 js
const inputStr = "D a B c d c C A E c e B b"
const expectedStr = "(a A) (B B b) (c c C c) (D d) (E e)"
const charVal = c => c.toUpperCase().charCodeAt()
function groupCharSort(str) {
const chars = str.split(" ")
const groups = {}
chars.forEach(c => {
const cv = charVal(c)
if (!groups[cv]) groups[cv] = []
groups[cv].push(c)
})
return Object.values(groups).sort((g1, g2) => charVal(g1[0]) - charVal(g2[0])).map(cs => `(${cs.join(" ")})`).join(" ")
}
const resultStr = groupCharSort(inputStr)
console.log("out :" + resultStr)
console.log("expect:" + expectedStr)
console.log(resultStr == expectedStr)