@@ -49,7 +49,7 @@ Difficulty: **Easy**
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``` javascript
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let sum = 0
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- for (let digit of n .toString ()) {
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+ for (const digit of n .toString ()) {
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sum += Math .pow (Number (digit), 2 )
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}
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@@ -64,7 +64,7 @@ var isHappy = function (n, appearedNums) { // 0
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appearedNums || = new Set () // 1
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let sum = 0
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- for (let digit of n .toString ()) {
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+ for (const digit of n .toString ()) {
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sum += Math .pow (Number (digit), 2 )
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}
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@@ -144,7 +144,7 @@ var isHappy = function (n, appearedNums) {
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appearedNums || = new Set ()
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let sum = 0
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- for (let digit of n .toString ()) {
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+ for (const digit of n .toString ()) {
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sum += Math .pow (Number (digit), 2 )
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}
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@@ -258,7 +258,7 @@ public class Solution
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``` javascript
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let sum = 0
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- for (let digit of n .toString ()) {
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+ for (const digit of n .toString ()) {
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sum += Math .pow (Number (digit), 2 )
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}
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@@ -273,7 +273,7 @@ var isHappy = function (n, appearedNums) {
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appearedNums || = new Set () // 1
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let sum = 0
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- for (let digit of n .toString ()) {
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+ for (const digit of n .toString ()) {
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sum += Math .pow (Number (digit), 2 )
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}
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