Created
February 14, 2020 12:07
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balance
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var userSums = [{name: 'ayal', sum: 400}, {name: 'tomer', sum: 300}, {name: 'guy', sum: 250}, {name: 'ronni', sum: 0}, {name: 'max', sum: 0}]; | |
var sum = userSums.reduce((acc,u)=>acc+u.sum,0); | |
var usum = sum / userSums.length; | |
userSums.map(x=>(x.balance = x.sum - usum) && (x.gotgave = 0)); | |
var balanceUsers = (u1,u2)=> { | |
if (u1.balance < 0 && u2.balance > 0) { | |
// u1 pays u2 | |
let topay = 0; | |
//debugger; | |
if (Math.abs(u1.balance) >= u2.balance) { | |
topay = u2.balance; | |
} | |
else { | |
topay = -u1.balance; | |
} | |
console.log(u1.name, 'pays', u2.name, topay); | |
u1.balance += topay; | |
u1.gotgave -= topay; | |
u2.balance -= topay; | |
u2.gotgave += topay; | |
} | |
if (u2.balance < 0 && u1.balance > 0) { | |
balanceUsers(u2, u1); | |
} | |
}; | |
var balanceUser = (u) => { | |
for (let userSum of userSums) { | |
balanceUsers(u, userSum) | |
} | |
} | |
console.log('every one should pay', usum); | |
for (let userSum of userSums) { | |
balanceUser(userSum); | |
} | |
console.log(userSums); |
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