题解 | #挑7#
挑7
http://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
while(word = readline()) {
word = parseInt(word, 10);
let arr = [];
for(var i=1;i<=word;i++) {
((i+'').includes('7') || !(i%7)) && arr.push(i);
}
console.log(arr.length);
} 
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