javascript - 从下到上对数组进行排序并反向排序。仅获取总数组的 10%

Question

"missed_votes_pct" = [4.61, 0.53, 0.18, 0.89, 0.53, 2.3, 4.96, 
0.71, 0.35, 4.26, 0.35, 1.06, 0.89, 1.06, 
0.18, 0.89, 9.54, 0, 3.9, 4.26, 0.35, 1.77, 
0.35, 0.53, 5.67, 0.35, 1.42, 13.65, 2.66, 
0.18, 0.18, 6.38, 0.71, 8.51, 4, 0.35, 0.35,
 5.14, 0, 0.35, 0.53, 0.35, 4.61, 3.01, 4.43,
 2.13, 1.24, 1.7, 2.13, 10.99, 0.53, 2.09, 
0.53, 0.35, 0, 0.53, 0, 0.35, 3.01, 1.77, 
0.89, 0.53, 45.56, 2.48, 0, 14.89, 1.77, 
4.43, 3.19, 0.35, 2.84, 6.21, 3.55, 1.24, 
0.89, 0.71, 0, 0.89, 1.24, 1.6, 6.21, 2.48,
 1.06, 2.13, 0.18, 0.89, 65, 3.19, 0.89, 0, 
0.89, 3.4, 3.55, 1.06, 0, 3.37, 4.96, 1.06, 0.71,
 1.42]

function getTenPerOfMissed(array) {
  var temp = [];
  var len = array.length * 0.1;
  for (var i = 0; i < array.length; i++) {
    //	console.log(array[i].missed_votes_pct);

    if (i < len) {
      temp.push(array[i]);
    } else if (array[i].missed_votes_pct == array[i - 1].missed_votes_pct) { //find the 10% of the lowest values and keep also values that                                                                               repeated
      temp.push(array[i]);
    } else {
      break;
    }
  }
  console.log(temp);
}


function bottomTenPercent() {
  members.sort(function(a, b) {
    return a.missed_votes_pct - b.missed_votes_pct; //sort our array from lower to higher and call getTenPerOfMissed(members)
    //to keep the 10% of the lowest values
  });
  //	console.log("Lowest" , members)
  getTenPerOfMissed(members)
}


function TopTenPercent() {
  members.sort(function(a, b) {
    return b.missed_votes_pct - a.missed_votes_pct;
  });

  getTenPerOfMissed(members);
}


bottomTenPercent();
TopTenPercent();

我创建了这三个函数来对数组进行从高到低的排序和反向排序。另外，我只需要保留 10% 的数字，并且必须保留它们重复的数字。 当我打印带有排序数字的临时数组时，这两个排序函数无法一起工作。如果我只称其中之一工作完美。 另外，我需要访问 temp[]，因为我想打印表中的数字。我必须遵循什么过程，因为我根本无法意识到整个过程，并且当我尝试将 temp[] 设置为全局变量时，我的函数无法正常工作有什么想法我做错了吗？因为我已经坚持这个任务两天了。我是 javascript 新手，所以如果我的问题很愚蠢，请原谅我

Answer 1

打开该临时数组的最简单方法是从 getTenPerOfMissed 函数返回它。然后，无论调用什么函数都可以访问修改后的数组。

function getTenPerOfMissed(array) {
  var temp = [];
  var len = array.length * 0.1;
  for (var i = 0; i < array.length; i++) {
    //  console.log(array[i].missed_votes_pct);

    if (i < len) {
      temp.push(array[i]);
    } else if (array[i].missed_votes_pct == array[i - 1].missed_votes_pct) { //find the 10% of the lowest values and keep also values that                                                                               repeated
      temp.push(array[i]);
    } else {
      break;
    }
  }
  return temp;
}

  var topten = getTenPerOfMissed(array);
  // topten is the "temp" array from getTenPerOfMissed

  // sort array differently
  array.sort(...);
  var bottomten = getTenPerOfMissed(array);