Merge pull request #10 from 403-html/Fix-randSum-to-pass-0

Fix rand sum to pass 0 and 1 length

Author: Tymoteusz

RandSum0/index.js

@@ -1,37 +1,43 @@
-class genSum{
-    constructor(n){
-        this.array = [];
-        this.toss(n);
+class genSum {
+    constructor(n) {
+        this.array = []
+        if (n > 0) this.toss(n)
     }
-    toss(n){
-        let arrSum = 1;
-        while(arrSum != 0){
-            this.array.length = 0;
+    toss(n) {
+        if (n) {
+            let arrSum = 1
+            while (arrSum != 0) {
+                this.array.length = 0
 
-            for(let i = 0; i < n; i++){
-                let num;
-                do {
-                    num = this.pickRandNum({
-                        min: 0,
-                        max: 100,
-                        negative: true});
-                }while(this.array.includes(num))
-                this.array.push(num);
+                for (let i = 0; i < n; i++) {
+                    let num
+                    do {
+                        num = this.pickRandNum({
+                            min: 0,
+                            max: 100,
+                            negative: true,
+                        })
+                    } while (this.array.includes(num))
+                    this.array.push(num)
+                }
+                arrSum = this.sumArray()
             }
-            arrSum = this.sumArray();
         }
     }
-    pickRandNum({min,max,negative = false}){
-        let num = Math.floor(Math.random()* max) + min;
-        if(negative) num *= Math.random() > 0.5 ? 1 : -1;
-        return num;
+    pickRandNum({ min, max, negative = false }) {
+        let num = Math.floor(Math.random() * max) + min
+        if (negative) num *= Math.random() > 0.5 ? 1 : -1
+        return num
     }
-    sumArray(){
-        return this.array.reduce((a,b)=>a+b);
+    sumArray() {
+        if (this.array.length) {
+            if (this.array.length == 1) {
+                return this.array[0]
+            } else {
+                return this.array.reduce((a, b) => a + b)
+            }
+        } else {
+            return this.array
+        }
     }
 }
-
-let random = new genSum(5);
-
-console.log(random.array);
-console.log(random.sumArray());