vple

// Approach 1: if/else chain. (This could also be a switch.)
public static String digit2String(int digit) {
    if (digit == 0) {
        return "0";
    } else if (digit == 1) {
        return "1";
    } else if (digit == 2) {
        return "2";
    } else if (digit == 3) {
        return "3";

vple

public static String int2String(int n) {
    List<String> digits = new ArrayList<>();
    
    while (n > 0) {
        int digit = n % 10;
        digits.add(digit2String(digit));
        n = n / 10;
    }
    
    // To be implemented...

vple

public static String int2String(int n) {
    while (n > 0) {
        int digit = n % 10;
        n = n / 10;
    }
    
    // To be implemented...
}

vple

public static String int2String(int n) {
    int power = 0;
    int nCopy = n;
    while (nCopy > 0) {
        power++;
        nCopy = nCopy / 10;
    }
    
    // 10^power is one order higher than what we want.
    power--;

vple

public static void int2String(int n) {
    return Integer.toString(n);
}

public static void int2String(int n) {
    return "" + n;
}

vple

import java.io.*;
import java.util.*;

/*
 */
class Solution {

  // Implement me!
  static String int2String(int n) {
    if (n == 0) {

vple

while (itemIdx < item.size()) {
    Map itm = (Map)(item.get(itemIdx));
    //ensure both itm and nextItem contain externalId - i.e the NS product mapping
    if (itm.containsKey("item") && itm["item"].containsKey("externalId") &&
        nextItem.containsKey("item") && nextItem["item"].containsKey("externalId")) {
        //find which invoice item nextItem should be applied to
        appliedToItemId = record.get("InvoiceItem.AppliedToInvoiceItemId");
        //System.out.println("Itm ext id:" + itm["item"]["externalId"] + ", Applied to Id:" + appliedToItemId);
        //if ((itm["item"]["externalId"] != null) && itm["item"]["externalId"].equals(appliedToItemId)) {
            //add amount to existing

vple

while (itemIdx < item.size()) {
    Map itm = (Map)(item.get(itemIdx));
    //ensure both itm and nextItem contain externalId - i.e the NS product mapping
    if (itm.containsKey("item") && itm["item"].containsKey("externalId") &&
        nextItem.containsKey("item") && nextItem["item"].containsKey("externalId")) {
        //find which invoice item nextItem should be applied to
        appliedToItemId = record.get("InvoiceItem.AppliedToInvoiceItemId");
        //System.out.println("Itm ext id:" + itm["item"]["externalId"] + ", Applied to Id:" + appliedToItemId);
        //if ((itm["item"]["externalId"] != null) && itm["item"]["externalId"].equals(appliedToItemId)) {
            //add amount to existing