function IsPopOrder(pushV, popV)
{
// write code here
var stack = [];
var index = 0;
for(let i = 0;i<pushV.length;i++){
stack.push(pushV[i]);
while(stack.length&&popV[index]==stack[stack.length-1]){
stack.pop();
index++;
}
}
return stack.length==0;
}

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