6.ZigZagConversionThestring "PAYPALISHIRING" iswritteninazigzagpatternonagivennumberofrowslikethis:(youmaywanttodisplaythispatterninafixedfontforbet...

Givenabinarytree,returnthe zigzaglevelorder traversalofitsnodes'values.(ie,fromlefttoright,thenrighttoleftforthenextlevelandalternatebetween).Forexamp...

题意：给你一个字符串和行数numRows，要求把该字符串变成一个“之”字形状后，按行数输出该字符串。 例子："ABCDEFGHIJKLMNO",4。该字符串的“之”字形状为：AGMBFHLNCEIKODJ那么，输出为AGMBFHLNCEIKODJ（按行数输出）&...