
编写一个函数repeatalpha,它接受一个字符串并显示它
重复每个字母字符的次数与其字母索引相同。
解决方案
const range = (start, stop, step) => array.from( { length: math.ceil((stop - start) / step) }, (_, i) => start + i * step );const upperalpha = range("a".charcodeat(0), "z".charcodeat(0) + 1, 1).map((x) => string.fromcharcode(x));const loweralpha = range("a".charcodeat(0), "z".charcodeat(0) + 1, 1).map((x) => string.fromcharcode(x));function getalphaindex(char) { if (char === char.touppercase()) { return upperalpha.indexof(char) + 1; } if (char === char.tolowercase()) { return loweralpha.indexof(char) + 1; }}function repeatalpha(text) { let occurrence = []; array.from(text).foreach((char) => { let count = getalphaindex(char); let result = array(count).fill(char).join(""); occurrence.push(result); }); return occurrence.join("");}console.log(repeatalpha("becky"));console.log(repeatalpha("nengi"));console.log(repeatalpha("chinwendu"));console.log(repeatalpha("dindustack"));
结果
BBeeeeeccckkkkkkkkkkkyyyyyyyyyyyyyyyyyyyyyyyyynnnnnnnnnnnnnneeeeeNNNNNNNNNNNNNNgggggggiiiiiiiiiCCChhhhhhhhIIIIIIIIInnnnnnnnnnnnnnwwwwwwwwwwwwwwwwwwwwwwweeeeennnnnnnnnnnnnndddduuuuuuuuuuuuuuuuuuuuuddddiiiiiiiiinnnnnnnnnnnnnndddduuuuuuuuuuuuuuuuuuuuusssssssssssssssssssttttttttttttttttttttaccckkkkkkkkkkk
以上就是根据字母顺序索引重复字符串中的字符的详细内容,更多请关注创想鸟其它相关文章!
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