rem: var col = [], n = this.elements.length, k = n, i; do { i = k - n; col.push(this.elements[i][j-1]); } while (--n); 
add: var col = [], n = this.elements.length; for (var i = 0; i < n; i++) { col.push(this.elements[i][j-1]); } 
context:   col: function(j) {    if (j > this.elements[0].length) { return null; }    var col = [], n = this.elements.length, k = n, i;    do { i = k - n;      col.push(this.elements[i][j-1]);    } while (--n);    return Vector.create(col);  },
meta: 3877	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/3877/5bb35ddb3516d7e68f3747d86540ffaa68de3fe3/matrix.js/buggy/src/matrix.js