题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
const rl = require("readline").createInterface({ input: process.stdin }); rl.on('line',function(line) { console.log(new Set(line).size) })
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
const rl = require("readline").createInterface({ input: process.stdin }); rl.on('line',function(line) { console.log(new Set(line).size) })
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