题解 | #记票统计#
记票统计
http://www.nowcoder.com/practice/3350d379a5d44054b219de7af6708894
const trueTotal = parseInt( readline() )
const trueArr = readline().split(" ")
const total = parseInt( readline() )
const totalArr = readline().split(" ")
const obj = {}
trueArr.forEach( item => {
obj[ item ] = 0
})
const falseArr = []
totalArr.forEach( item => {
if( trueArr.indexOf( item ) > -1 ) {
obj[item] += 1
}else {
falseArr.push( item )
}
})
Object.keys( obj ).forEach( key => {
print(`${key} : ${obj[key]}`)
})
print(`Invalid : ${falseArr.length}`)
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