added new problems solution ad, even and more odd, and sum problems has been added here

Author: shihabuddin-dev

D. Loop/While/commitment.js

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+/*** Problem-1
+
+"I will invest at least 6 hrs every single day for next 60 days!" this message 60 times. So display this.
+
+ */
+// Solution-1 
+let day = 1;
+while (day <= 60) {
+    console.log("I will invest at least 6 hrs every single day for next " + day + " days!");
+    day++;
+}
+
+// Solution-2
+let i = 1;
+while (i <= 60) {
+    console.log(`I will invest at least 6 hrs every single day for next ${i} days!`);
+    i++;
+}

D. Loop/While/countdown.js

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+/*** Problem-7
+
+Implement a countdown timer that counts down from 81 to 65.
+
+ */
+
+// Solution-1 
+let j = 81;
+while (j >= 65) {
+    if (j % 2 === 0 || j % 2 === 1) {
+        console.log(j);
+        j--;
+    }
+}
+
+// Solution-2 
+let i = 81;
+while (i >= 65) {
+    console.log(i);
+    i--;
+}
+

D. Loop/While/even.js

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+/*** Problem-4
+
+Find all the even numbers from 78 to 98.
+
+ */
+
+
+// Solution 1 
+let i = 78;
+while (i <= 98) {
+    if (i % 2 === 0) {
+        console.log(i);
+    }
+    i++;
+}
+
+// Solution 2 
+let j = 78;
+while (j <= 98) {
+    console.log(j);
+    j += 2
+}

D. Loop/While/multiplication.js

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+/*** Problem-6
+ * 
+Generate a multiplication table for number 9
+
+ */
+
+// Solution - 1 
+let i = 1;
+while (i <= 10) {
+    console.log('9 * ' + i + ' = ' + (9 * i));
+    i++;
+}
+
+// Solution-2 
+let j = 1;
+while (j <= 10) {
+    console.log(`9 * ${j} = ${9 * j}`);
+    j++;
+}

D. Loop/While/odd.js

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+/*** Problem-2
+
+Find all the odd numbers from 61 to 100.
+
+ */
+
+// Solution-1 
+let i = 61;
+while (i <= 100) {
+    i++;
+    if (i % 2 === 1) {
+        console.log(i);
+    }
+}
+
+
+// solution-2
+let j = 61;
+while (j <= 100) {
+    console.log(j);
+    j += 2;
+}

D. Loop/While/sum-&-even.js

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+/*** Problem-5
+
+Display sum of all the even numbers from 51 to 85.
+ */
+
+// Solution-1 
+let i = 51;
+sum = 0;
+while (i <= 85) {
+    if (i % 2 === 0) {
+        sum = sum + i;
+    }
+    i++;
+}
+console.log(sum);
+
+
+// Solution-2 
+let j = 52;
+add = 0;
+while (j <= 85) {
+    add = add + j;
+    j += 2;
+
+}
+console.log(add);

D. Loop/While/sum-&-odd.js

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+/*** Problem-3
+
+Display sum of all the odd numbers from 91 to 129.
+***/
+
+// Solution-1 
+let i = 91;
+sum = 0;
+while (i <= 129) {
+    if (i % 2 === 1) {
+        sum = sum + i;
+    }
+    i++;
+}
+console.log("This is total of odd number : ", sum);
+
+
+// Solution-2 
+
+let j = 91
+add = 0;
+while (j <= 129) {
+    add = add + j;
+    j += 2;
+}
+console.log("This is total of odd number : ", add);