题解 | #蛇形矩阵#
蛇形矩阵
https://www.nowcoder.com/practice/649b210ef44446e3b1cd1be6fa4cab5e
// 这道题最好以找规律入手,毕竟从1开始递增,且排列也是确定的,那么规律也是确定的; // 确定横排竖排的数字变化规律后,挨个输出就行 // 而规律为每一行的后一个数=前一个数+行数(从0开始)+列数(从1开始),如3=1+0+2,9=5+1+3 // 每一列的数=前一个数+行数,如2=1+1,4=2+2 let inputNum = parseInt(readline()); let tmpline = '' let startNum let startColum = 1 for (let i = 0; i < inputNum; i++) { let numCount = inputNum - i startColum += i startNum = startColum for (let j = 0; j < numCount; j++) { tmpline += String(startNum) if (j !== (numCount - 1)) { tmpline += ' ' } startNum += (i+j+2) } console.log(tmpline) tmpline = '' }