题解 | #字符统计#
字符统计
http://www.nowcoder.com/practice/c1f9561de1e240099bdb904765da9ad0
const str = readline();
var strarr = str.split("");
var strobj = {};
var newarr = [];
strarr.forEach((item) => {
if (strobj[item]) {
strobj[item]++;
} else {
strobj[item] = 1;
newarr.push(item);
}
});
for (var i = 0; i < newarr.length - 1; i++) {
for (var j = i + 1; j < newarr.length; j++) {
var char_1 = newarr[i];
var char_2 = newarr[j];
if (strobj[char_1] < strobj[char_2]) {
var temp = newarr[i];
newarr[i] = newarr[j];
newarr[j] = temp;
} else if (strobj[char_1] == strobj[char_2]) {
if (char_1.charCodeAt() > char_2.charCodeAt()) {
var temp = newarr[i];
newarr[i] = newarr[j];
newarr[j] = temp;
}
}
}
}
console.log(newarr.join(""))
