Shulou(Shulou.com)06/03 Report--

Today, I will talk to you about how to give a square or rectangular matrix matrix and how to achieve zigzag printing. Many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

Two for loops are nested.

The outer loop. First iterate through the first column, and then iterate through the last row that does not contain the column number 0. Change the flag bit every time you cycle.

Inner circulation. Judging by the sign bit, from lower left to upper right, or from upper right to lower left.

The code is written in golang. The code is as follows:

Package main

Import "fmt"

Func main () {arr: = [] [] int {{0,1,2}, {3,4,5}, {6,7,8}} printMatrixZigZag (arr)} func printMatrixZigZag (matrix [] [] int) {row: = len (matrix) col: = len (matrix [0]) fromUp: = false / / traverse the first column for I: = 0; I

< row; i++ { if fromUp { //找最右上的位置 j := 0 for ; i-j >

= 0 & & j

< col; j++ { } j-- //右上到左下 for ; j >

= 0; fmt.Print-{fmt.Print (Matrix [I-j] [0qj], ")}} else {/ / bottom left to upper right for j: = 0; iMub j > = 0 & & j

< col; j++ { fmt.Print(matrix[i-j][0+j], " ") } } fromUp = !fromUp } //遍历最后一行 for j := 1; j < col; j++ { if fromUp { //找最右上的位置 i := 0 for ; row-1-i >

= 0 & & jpragi

< col; i++ { } i-- //右上到左下 for ; i >

Else {/ / bottom left to upper right for I: = 0; row-1-i > = 0 & & Jaimi < col FromUp + {fmt.Print (Matrix [row-1 muri] [Jubi], "")}} fromUp =! fromUp}}

The implementation results are as follows:

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[left God java Code] (https://github.com/algorithmzuo/algorithmbasic2020/blob/master/src/class40/Code07_ZigZagPrintMatrix.java)

[comments] (https://user.qzone.qq.com/3182319461/blog/1617318990)

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