题解 | #明明的随机数#

let N = parseInt(readline());
let numArr = [];
for (let i = 0; i < N; i++) {
    const lineNum = parseInt(readline());
    if (lineNum >= 1 && lineNum <= 500) numArr.push(lineNum);
}

function func(numArr) {
    // 方法1：利用ES6 的 Set 去重
    // const resArr = [...new Set(numArr)];
    
    // 方法2：利用obj的key唯一特性去重
    const resArr = toSetArr(numArr);
    
    // sort排序
    resArr.sort((a, b) => a-b);
    
    resArr.forEach((item) => {
        print(item);
    });
}

// 利用obj的key唯一特性去重
function toSetArr(numArr) {
    const resArr2 = [];
    const map = {};
    numArr.forEach((item) => {
        if (!map[item]) {
            map[item] = 1;
        }
    });
    for (let key in map) {
        resArr2.push(parseInt(key));
    }
    return resArr2;
}

func(numArr);