JavaScript Algorithms and Data Structures Projects - Cash Register

JavaScript
1

Tell us what’s happening:
Describe your issue in detail here.
I’ve been stuck on this for 2 days …never made a help post before but i am getting hopeless on this one …plz help
Your code so far

function checkCashRegister(price, cash, cid) {
    let newCid =[
      ["PENNY", 0.01],
      ["NICKEL", 0.05],
      ["DIME", 0.1],
      ["QUARTER", 0.25],
      ["ONE", 1],
      ["FIVE", 5],
      ["TEN", 10],
      ["TWENTY", 20],
      ["ONE HUNDRED", 100]
    ]
    let changeReturn = (cash - price)
    let change = []
    
    ////////////// INSUFFICIENT_FUNDS SCENARIO
    
    let sumOfAll = 0
    for(let elem of cid){
      sumOfAll += elem[1]
    }
    
    if(sumOfAll < changeReturn){
      return {status:"INSUFFICIENT_FUNDS", 'change': []}
    }
  
    ////////////////////////////////////////////
    
  
    let a = cid.length - 1
    while (a >= 0){
    let add = 0
      while(changeReturn >= newCid[a][1] && cid[a][1] !== 0){
        cid[a][1] -= newCid[a][1]
        changeReturn -= newCid[a][1] 
        add += newCid[a][1]
  
      }
        if(!change.includes(newCid[a][0])){
          change.push([newCid[a][0],add])
        }
      a--
    }
    
    if(change[change.length - 1][0] === newCid[0][0] &&
    change[change.length -1][1] !== 0){
        change[change.length -1][1] += newCid[0][1]
        if(cid[0][0] < 0.01){
            cid[0][0] = 0
        }
    }

    ////////////// CLOSED SCENARIO
    
    let sum = 0
    for(let elem of cid){
      sum += elem[1]
    }

    if(sum < 0){
    return {status:"CLOSED", 'change': change}
    }

    //////////////

    change = change.filter(elem => elem[1] !== 0)
    return {status:"OPEN", 'change': change}
    }
  
      console.log(
      //  checkCashRegister(19.5, 20, [["PENNY", 0.01], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 1], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]),
    checkCashRegister(19.5, 20, [["PENNY", 0.01], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 1], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]])
        )

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Challenge: JavaScript Algorithms and Data Structures Projects - Cash Register

Link to the challenge:

3

Welcome to the forum. Dont be afraid to ask for help. Can you describe what exactly the problem you got?

4

Return {status: "INSUFFICIENT_FUNDS", change: []} if cash-in-drawer is less than the change due, or if you cannot return the exact change.

Are you checking for the exact change?

Last test:

{ status: 'OPEN', change: [ [ 'PENNY', 0.5000000000000002 ] ] }

If this was a physical cash exchange, how would you return this?

5

i tried using .toFixed but was unable to change its output to 0.5

6

Post the code otherwise we can’t help.