Transpose 2d array

Benchmark created by Billy on

Setup

var array = [
      [1,2,3],
      [4,5,6],
      [7,8,9],
      [10,11,12]
    ];

Test runner

Ready to run.

Testing in
TestOps/sec
For loops
var newArray = [],
    origArrayLength = array.length,
    arrayLength = array[0].length,
    i;
for(i = 0; i < arrayLength; i++){
    newArray.push([]);
};

for(i = 0; i < origArrayLength; i++){
    for(var j = 0; j < arrayLength; j++){
        newArray[j].push(array[i][j]);
    };
};
ready
Map
var newArray = array[0].map(function(col, i){
    return array.map(function(row){
        return row[i];
    });
});
ready

Revisions

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