Nested Loops

JS/While & For loop [09-02-2024]/Demo.js

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+// Loops - For, while, do while, for in, for of
+
+// while loop
+// let i=6;
+// while(i<5){
+//     console.log(i);
+//     i++;
+// }
+
+// do while
+// let i = 6;
+// do {
+//   console.log(i);
+//   i++;
+// } while (i < 5);
+
+// Nested Loops - for, while, do while
+
+// Nested for Syntax
+
+// let line = 1;
+
+// for(let i=0;i<5;i++){  // outer loop
+//     for(let j=0;j<3;j++){ // inner loop
+//         for(let k=0;k<2;k++){
+//             console.log(line++); // 5*3*2;
+//         }
+//     }
+// }
+
+// Nested while Syntax
+
+// let i = 0;
+// let j = 0;
+// while (i < 5) {
+//   while (j < 3) {
+//     j++;
+//   }
+//   console.log(i, j);
+//   i++;
+// }
+
+// Problems - Pattern Printing, Series Sum, Matrix, SubArrays.....
+
+// Square Pattern
+// N=3;
+// * * *
+// * * *
+// * * *
+
+// let N=9;
+
+// for(let i=1;i<=N;i++){ // Outer-Loop
+//     let bag = "";
+//     for(let j=1;j<=N;j++){ // Inner-Loop
+//         bag+="* "
+//     }
+//     console.log(bag);
+// }
+
+// Blank Square Pattern
+// * * * *
+// *     *
+// *     *
+// * * * *
+
+// let N=4;
+
+// for(let i=1;i<=N;i++){ // Outer-Loop
+//     let bag = "";
+//     for(let j=1;j<=N;j++){ // Inner-Loop
+//         if(i==1 || i==N){
+//             bag+="* ";
+//         }
+//         else if(j==1 || j==N){
+//             bag+="* ";
+//         }
+//         else{
+//             bag+="  ";
+//         }
+//     }
+//     console.log(bag);
+// }
+
+// V pattern
+
+// function printPattern(N) {
+//     for(let i=N;i>0;i--){
+//         let bag="";
+//         for(let j=1;j<=N;j++){
+//             if(j<i){
+//                 bag+="* "
+//             }
+//             else if(j==i){
+//                 bag+="*"
+//             }
+//             else{
+//                 bag+="  "
+//             }
+//         }
+//         console.log(bag);
+//     }
+// }
+
+// SubStrings - All SubStrings
+
+// let str = "masai"; // m, ma, mas, masa, masai, a, as, asi, sai, ai, i
+
+// for (let i = 0; i < str.length; i++) {
+//   let bag = "";
+//   for (let j = i; j < str.length; j++) {
+//     bag += str[j];
+//     console.log(bag);
+//   }
+// }
+
+// SubStrings - exist of not
+
+// let str = "quickbrownfoxjumpsoverthelazydog";
+
+// let subStr = "high";
+
+// function check(str, subStr) {
+//   for (let i = 0; i < str.length; i++) {
+//     let bag = "";
+//     for (let j = i; j < str.length; j++) {
+//       bag += str[j];
+//       if (bag == subStr) {
+//         console.log("true");
+//         return;
+//       }
+//     }
+//   }
+//   console.log("false");
+//   return;
+// }
+
+// check(str, subStr);
+
+// Max occurences
+
+// function maximumOccurences(N, arr) {
+//   let str = "abcdefghijlkmnopqrstuvwxyz";
+//   let myArr = Array(26).fill(0);
+
+//   for (let i = 0; i < arr.length; i++) {
+//     for (let j = 0; j < str.length; j++) {
+//       if (arr[i] == str[j]) {
+//         myArr[j]++;
+//         break;
+//       }
+//     }
+//   }
+
+//   let max = -Infinity;
+//   let stored = -1;
+//   for (let i = 0; i < myArr.length; i++) {
+//     if (myArr[i] > max) {
+//       max = myArr[i];
+//       stored = i;
+//     }
+//   }
+//   console.log(str[stored]);
+// }
+
+