R語言FOR迴圈列印9*9乘法表
阿新 • • 發佈:2018-12-02
R語言FOR迴圈列印9*9乘法表
演算法原理
使用for迴圈列印99乘法表時,需要兩重迴圈,第一重迴圈乘數,第二重迴圈表示被乘數,列印當乘數大於等於被乘數時的結果,並在每次第二重迴圈結束時換行。
程式碼和結果展示
for(x in c(1:9)){ for(y in c(1:9)){ if(x>=y){ z<-x*y cat(x,"*",y,"=",z," ") } } cat("\n") } > for(x in c(1:9)){ + for(y in c(1:9)){ + if(x>=y){ + z<-x*y + cat(x,"*",y,"=",z," ") + } + } + cat("\n") + } 1 * 1 = 1 2 * 1 = 2 2 * 2 = 4 3 * 1 = 3 3 * 2 = 6 3 * 3 = 9 4 * 1 = 4 4 * 2 = 8 4 * 3 = 12 4 * 4 = 16 5 * 1 = 5 5 * 2 = 10 5 * 3 = 15 5 * 4 = 20 5 * 5 = 25 6 * 1 = 6 6 * 2 = 12 6 * 3 = 18 6 * 4 = 24 6 * 5 = 30 6 * 6 = 36 7 * 1 = 7 7 * 2 = 14 7 * 3 = 21 7 * 4 = 28 7 * 5 = 35 7 * 6 = 42 7 * 7 = 49 8 * 1 = 8 8 * 2 = 16 8 * 3 = 24 8 * 4 = 32 8 * 5 = 40 8 * 6 = 48 8 * 7 = 56 8 * 8 = 64 9 * 1 = 9 9 * 2 = 18 9 * 3 = 27 9 * 4 = 36 9 * 5 = 45 9 * 6 = 54 9 * 7 = 63 9 * 8 = 72 9 * 9 = 81