当前位置：网站首页>Realization of serpentine digital lattice Write a cube function with the input parameter of num. the requirements are as follows through JS: when num=3, the output table effect is: [[1,2,3] [6,5,4] [7

Realization of serpentine digital lattice Write a cube function with the input parameter of num. the requirements are as follows through JS: when num=3, the output table effect is: [[1,2,3] [6,5,4] [7

2022-07-21 20:40:00 【Bug tune teacher】

function snakeMatrix(num) {
var arr1 = new Array(num);// Initial unidimensional array
for(let k=0;k<num;k++){
arr1[k] = new Array(num); Initial 2D array
}
for(let i=0;i<num;i++){
for(let j=num-1;j>=0;j–){
// num The square of is just arr1[num][num] The maximum number of , So you only need to use num Subtract the array subscript from the square of
arr1[i][j] = num*(i+1)-j;
}
if(i%2==0){
// If i For the even , Reverse
arr1[i] = arr1[i].reverse();
}
}
return arr1;
}
console.log(snakeMatrix)

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