题目:
leetcode.cn/problems/de…
算法:
方法一:模拟题
func decodeCiphertext(encodedText string, rows int) string {
n := len(encodedText)
cols := n / rows
ans := []byte{}
lastNotSpace := 0
for j := 0; j < cols; j ++ {
x, y := 0, j
pos := j
for x < rows && y < cols {
ans = append(ans, encodedText[pos])
if string(encodedText[pos]) != " " {
lastNotSpace = len(ans)
}
x ++
y ++
pos = pos + cols + 1
}
}
ans = ans[:lastNotSpace]
return string(ans)
}