/
ch-1.js
executable file
·41 lines (37 loc) · 883 Bytes
/
ch-1.js
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#! /usr/bin/node
"use strict"
function greatestenglishletter(a) {
let m = new Map;
for (let c of a.split("")) {
const uc = c.toUpperCase();
let v = (c == uc) ? 1 : 2;
if (m.has(uc)) {
v |= m.get(uc);
}
m.set(uc, v);
}
let s = [...m.keys()].filter( k => m.get(k) == 3 );
if (s.length == 0) {
return ""
}
s.sort();
return s[s.length - 1];
}
if (greatestenglishletter('PeRlwEeKLy') == 'L') {
process.stdout.write("Pass");
} else {
process.stdout.write("FAIL");
}
process.stdout.write(" ");
if (greatestenglishletter('ChaLlenge') == 'L') {
process.stdout.write("Pass");
} else {
process.stdout.write("FAIL");
}
process.stdout.write(" ");
if (greatestenglishletter('The') == '') {
process.stdout.write("Pass");
} else {
process.stdout.write("FAIL");
}
process.stdout.write("\n");