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566.重塑矩阵(输出超限).html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
       var matrixReshape = function(nums, r, c) {
          if(r*c!==nums[0].length*nums.length) return nums;
          let b = [];
          let targetArr = [];
          for(let i=0;i<r;i++){
              targetArr.push(b);
          }
          let k=1;
          let index=0;
          nums.map(arr=>arr.map(i=>{
              targetArr[index].push(i);
              if(k%c===0){
                  index++;
              }
              k++;
          }));
          return targetArr;
     };
    console.log(matrixReshape([[1,2],[3,4]],3,4));
    </script>
</body>
</html>