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getSpiralMatrix
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| const getSpiralMatrix = (rows, columns) => { | |
| let arr = [], i=0, j=0, iterI=0, iterJ=0; | |
| for(let i=0;i<rows;i++){ | |
| arr[i] = []; | |
| } | |
| for(let zn=1;zn<=rows*columns;zn++){ | |
| if(i == iterI){ | |
| arr[i][j] = zn; | |
| j++; | |
| if(j==columns-iterJ){ | |
| i++; | |
| j--; | |
| } | |
| } else | |
| if(j==columns-iterJ-1){ | |
| arr[i][j] = zn; | |
| i++; | |
| if(i==rows-iterI){ | |
| j--; | |
| i--; | |
| } | |
| } else | |
| if(i==rows-iterI-1){ | |
| arr[i][j] = zn; | |
| j--; | |
| if(j<iterJ){ | |
| i--; | |
| j++; | |
| } | |
| } else | |
| if(j==iterJ){ | |
| arr[i][j] = zn; | |
| i--; | |
| if(i<(iterI+1)){ | |
| j++; | |
| i++; | |
| iterI++; | |
| iterJ++; | |
| } | |
| } | |
| } | |
| return arr; | |
| } | |
| let matrix = getSpiralMatrix(4, 3); | |
| console.log(matrix); |
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