function countOff(n,m) {
let players = [];
for (let i = 1;i <= n;i++) {
players.push(i);
}
let flag = 0;
while(players.length > 1) {
let len = players.length;
let outNum = 0;
for (let i = 0;i < len;i++) {
flag++;
if (flag === m) {
flag = 0;
players.splice(i-outNum, 1);
outNum++;
}
}
}
console.log("剩下的是:" + players[0]);
}
countOff(5,3);
// countOff(100,10);