排序默写第三遍 

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<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>排序默写第三遍</title>
  </head>
  <body>
    <script>
      function bubbleSort(arr) {
        for (let i = 0; i < arr.length - 1; i++) {
          for (let j = 0; j < arr.length - 1 - i; j++) {
            if (arr[j] > arr[j + 1]) {
              [arr[j], arr[j + 1]] = [arr[j + 1], arr[j]];
            }
          }
        }
        return arr;
      }
      let arr = [1, 2, 22, 2, 21, 11];
      function selectionSort(arr) {
        let minIndex;
        for (let i = 0; i < arr.length - 1; i++) {
          minIndex = i;
          for (let j = i + 1; j < arr.length; j++) {
            if (arr[minIndex] > arr[j]) {
              minIndex = j;
            }
          }
          [arr[minIndex], arr[i]] = [arr[i], arr[minIndex]];
        }
        return arr;
      }
      function quickSort(arr) {
        if (arr.length <= 1) {
          return arr;
        }
        let left = [];
        let right = [];
        let middleIndex = Math.floor(arr.length / 2);
        let middleValue = arr[middleIndex];
        arr.splice(middleIndex, 1);
        for (let i = 0; i < arr.length; i++) {
          if (arr[i] < middleValue) {
            left.push(arr[i]);
          } else {
            right.push(arr[i]);
          }
        }
        return quickSort(left).concat(middleValue, quickSort(right));
      }
      function searching(arr, target) {
        let start = 0;
        let end = arr.length - 1;
        let middleIndex;
        let middleValue;
        while (start < end) {
          middleIndex = Math.floor((start + end) / 2);
          middleValue = arr[middleIndex];
          if (middleValue === target) {
            return middleIndex;
          } else if (middleIndex > target) {
            end = middleIndex - 1;
          } else {
            start = middleIndex + 1;
          }
        }
        return -1;
      }
      let arr1 = [...Array(10).keys()].map(x => x + 1);
      function flat(arr) {
        return arr.reduce((total, cur) => {
          return total.concat(Array.isArray(cur) ? flat(cur) : cur);
        }, []);
      }
      let arr2 = [1, 2, 3, [4, 5, 6, [7, 8, 9]]];
      function deepCopy(obj) {
        let result = Array.isArray(obj) ? [] : {};
        for (let key in obj) {
          if (obj.hasOwnProperty(key)) {
            if (typeof obj[key] === 'object' && obj[key] !== null) {
              result[key] = deepCopy(obj[key]);
            } else {
              result[key] = obj[key];
            }
          }
        }
        return result;
      }
      let a = {
        a: 1,
        b: '2',
        c: {
          a: 1
        },
        d: null,
        e: undefined,
        g: [1, 2, 3]
      };
      function add() {
        let _args = [...arguments];
        let _adder = function () {
          _args.push(...arguments);
          return _adder;
        };
        _adder.toString = function () {
          return _args.reduce((total, cur) => total + cur);
        };
        return _adder;
      }
      function debounce(func, delay) {
        let timer;
        return function () {
          let context = this;
          let args = arguments;
          clearTimeout(timer);
          timer = setTimeout(function () {
            func.apply(context, args);
          }, delay);
        };
      }
      function throttle(func, delay) {
        let old = 0;
        return function () {
          let context = this;
          let args = arguments;
          let now = Date.now();
          if (now - old > delay) {
            func.apply(context, args);
          }
        };
      }
      function throttle1(func, delay) {
        let timer;
        return function () {
          let context = this;
          let args = arguments;
          if (!timer) {
            setTimeout(function () {
              func.apply(context, args);
            }, delay);
          }
        };
      }
      // function ispadNumber(x) {
      //   if (x < 0) return false;
      //   let d = 0;
      //   let f = x;
      //   while (f > 0) {
      //     d = d + f%10;
      //     f = (f-f%10)
      //   }
      // }
    </script>
  </body>
</html>

基本掌握了，接下来要手写了，注意字体要工整；

最近在用 vue3+ts+ant design 打算封装一个 ant design 中关于 table 的组件，发现很困难，主要 table 中用到了插槽；

posted @ 2022-03-28 22:49  苹果π  阅读(10)  评论(0)  编辑  收藏  举报